eHealth Infrastructure
3.2.0 - release

This page is part of the FUT Infrastructure (v3.2.0: Release) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Resource Profile: ehealth-questionnaire - Detailed Descriptions

Active as of 2024-09-02

Definitions for the ehealth-questionnaire resource profile.

Guidance on how to interpret the contents of this table can be found here

0. Questionnaire
2. Questionnaire.extension
Control2..?
SlicingThis element introduces a set of slices on Questionnaire.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 4. Questionnaire.extension:recommendation
    Slice Namerecommendation
    Control0..1
    TypeExtension(Questionnaire recommendation) (Extension Type: CodeableConcept)
    6. Questionnaire.extension:intendedOrganization
    Slice NameintendedOrganization
    Control0..*
    TypeExtension(Questionnaire intended organization) (Extension Type: Reference(ehealth-organization)referenced)
    8. Questionnaire.extension:revision
    Slice Namerevision
    Control0..1
    TypeExtension(Revision) (Extension Type: string)
    10. Questionnaire.extension:modifierRole
    Slice NamemodifierRole
    Control1..*
    TypeExtension(Modified role) (Complex Extension)
    12. Questionnaire.extension:type
    Slice Nametype
    Control1..*
    TypeExtension(Questionnaire type) (Extension Type: CodeableConcept)
    14. Questionnaire.extension:styleSensitive
    Slice NamestyleSensitive
    Control0..1
    TypeExtension(Style sensitive) (Extension Type: boolean)
    16. Questionnaire.extension:employeeTitle
    Slice NameemployeeTitle
    Control0..1
    TypeExtension(Employee title) (Extension Type: string)
    18. Questionnaire.extension:usage
    Slice Nameusage
    Control0..1
    TypeExtension(Usage) (Extension Type: string)
    20. Questionnaire.extension:predecessor
    Slice Namepredecessor
    Control0..1
    TypeExtension(Predecessor) (Extension Type: Identifier)
    22. Questionnaire.extension:base
    Slice Namebase
    Control0..1
    TypeExtension(Base) (Extension Type: Identifier)
    24. Questionnaire.extension:baseEnvironment
    Slice NamebaseEnvironment
    Control0..1
    TypeExtension(Base environment) (Extension Type: Identifier)
    26. Questionnaire.version
    NoteThis is a business version Id, not a resource version Id (see discussion)
    Control1..?
    28. Questionnaire.jurisdiction
    BindingThe codes SHALL be taken from Jurisdiction
    (required to http://ehealth.sundhed.dk/vs/jurisdiction)
    30. Questionnaire.item
    InvariantssliderStepValueDecimal-Type: Item must have type='decimal' when using extension 'ehealth-questionnaire-sliderStepValueDecimal' (extension('http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-questionnaire-sliderStepValueDecimal').exists() implies type = 'decimal')
    32. Questionnaire.item.extension
    SlicingThis element introduces a set of slices on Questionnaire.item.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ url
    • 34. Questionnaire.item.extension:questionnaire-minOccurs
      Slice Namequestionnaire-minOccurs
      Control0..1
      TypeExtension(Questionnaire Min Occurs) (Extension Type: integer)
      36. Questionnaire.item.extension:questionnaire-maxOccurs
      Slice Namequestionnaire-maxOccurs
      Control0..1
      TypeExtension(Questionnaire Max Occurs) (Extension Type: integer)
      38. Questionnaire.item.extension:minValue
      Slice NameminValue
      Control0..1
      TypeExtension(Min value) (Extension Type: Choice of: date, dateTime, time, decimal, integer, Quantity)
      40. Questionnaire.item.extension:maxValue
      Slice NamemaxValue
      Control0..1
      TypeExtension(Max value) (Extension Type: Choice of: date, dateTime, time, decimal, integer, Quantity)
      42. Questionnaire.item.extension:questionnaire-sliderStepValue
      Slice Namequestionnaire-sliderStepValue
      Control0..1
      TypeExtension(Questionnaire Slider Step Value) (Extension Type: integer)
      44. Questionnaire.item.extension:questionnaire-sliderStepValueDecimal
      Slice Namequestionnaire-sliderStepValueDecimal
      Control0..1
      TypeExtension(Slider Step-value Decimal) (Extension Type: decimal)
      46. Questionnaire.item.extension:feedback
      Slice Namefeedback
      Control0..1
      TypeExtension(Feedback) (Complex Extension)
      48. Questionnaire.item.extension:overviewUsageMode
      Slice NameoverviewUsageMode
      Control0..*
      TypeExtension(Overview usage mode) (Extension Type: CodeableConcept)
      50. Questionnaire.item.extension:itemControl
      Slice NameitemControl
      Control0..1
      TypeExtension(Questionnaire Item Control) (Extension Type: CodeableConcept)
      52. Questionnaire.item.extension:itemControl.value[x]
      BindingThe codes SHALL be taken from Questionnaire Item Control
      (required to http://ehealth.sundhed.dk/vs/questionnaire-item-control)
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      54. Questionnaire.item.extension:ehealth-question-image
      Slice Nameehealth-question-image
      Control0..1
      TypeExtension(Questionnaire image) (Complex Extension)
      56. Questionnaire.item.extension:shortText
      Slice NameshortText
      Control0..1
      TypeExtension(Short text) (Extension Type: string)
      58. Questionnaire.item.extension:helpText
      Slice NamehelpText
      Control0..1
      TypeExtension(Help text) (Complex Extension)
      60. Questionnaire.item.extension:answerSignificance
      Slice NameanswerSignificance
      Control0..*
      TypeExtension(Answer significance) (Complex Extension)
      62. Questionnaire.item.extension:externalIdentifier
      Slice NameexternalIdentifier
      Control0..1
      TypeExtension(ExternalIdentifier) (Extension Type: Identifier)
      64. Questionnaire.item.text
      66. Questionnaire.item.text.extension
      SlicingThis element introduces a set of slices on Questionnaire.item.text.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 68. Questionnaire.item.text.extension:xhtml
        Slice Namexhtml
        Control0..1
        TypeExtension(XHTML Representation) (Extension Type: string)
        70. Questionnaire.item.enableBehavior
        72. Questionnaire.item.enableBehavior.extension
        SlicingThis element introduces a set of slices on Questionnaire.item.enableBehavior.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 74. Questionnaire.item.enableBehavior.extension:conditionId
          Slice NameconditionId
          Control0..1
          TypeExtension(Condition Id) (Extension Type: string)
          76. Questionnaire.item.answerOption
          78. Questionnaire.item.answerOption.extension
          SlicingThis element introduces a set of slices on Questionnaire.item.answerOption.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 80. Questionnaire.item.answerOption.extension:ehealth-answeroption-image
            Slice Nameehealth-answeroption-image
            Control0..1
            TypeExtension(Questionnaire image) (Complex Extension)
            82. Questionnaire.item.answerOption.value[x]
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            84. Questionnaire.item.answerOption.value[x].extension:xhtml
            Slice Namexhtml
            Control0..1
            TypeExtension(XHTML Representation) (Extension Type: string)
            86. Questionnaire.item.initial
            88. Questionnaire.item.initial.value[x]
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            90. Questionnaire.item.initial.value[x].extension:xhtml
            Slice Namexhtml
            Control0..1
            TypeExtension(XHTML Representation) (Extension Type: string)

            Guidance on how to interpret the contents of this table can be found here

            0. Questionnaire
            Definition

            A structured set of questions intended to guide the collection of answers from end-users. Questionnaires provide detailed control over order, presentation, phraseology and grouping to allow coherent, consistent data collection.

            ShortA structured set of questions
            Control0..*
            Is Modifierfalse
            Summaryfalse
            Alternate NamesForm, CRF, Survey
            Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
            dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
            dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
            dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
            dom-6: A resource should have narrative for robust management (text.`div`.exists())
            que-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
            que-2: The link ids for groups and questions must be unique within the questionnaire (descendants().linkId.isDistinct())
            que-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
            que-2: The link ids for groups and questions must be unique within the questionnaire (descendants().linkId.isDistinct())
            2. Questionnaire.implicitRules
            Definition

            A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

            ShortA set of rules under which this content was created
            Comments

            Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

            Control0..1
            Typeuri
            Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            4. Questionnaire.extension
            Definition

            An Extension


            May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortExtensionAdditional content defined by implementations
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control20..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            SlicingThis element introduces a set of slices on Questionnaire.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 6. Questionnaire.extension:recommendation
              Slice Namerecommendation
              Definition

              Defines the recommendation state of the questionnaire.

              ShortDegree to which this questionnaire is recommended for use.
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Questionnaire recommendation) (Extension Type: CodeableConcept)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              8. Questionnaire.extension:intendedOrganization
              Slice NameintendedOrganization
              Definition

              The questionnaire is intended to be used by these organizations.

              ShortThe organization intended to use this questionnaire.
              Control0..*
              This element is affected by the following invariants: ele-1
              TypeExtension(Questionnaire intended organization) (Extension Type: Reference(ehealth-organization)referenced)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              10. Questionnaire.extension:revision
              Slice Namerevision
              Definition

              Business revision of the resource

              ShortBusiness revision
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Revision) (Extension Type: string)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              12. Questionnaire.extension:modifierRole
              Slice NamemodifierRole
              Definition

              This is a modifier role that can hold a role and a reference to the item who has the role. Ex. owner + a reference to the owner organization.

              ShortModifier role
              Control1..*
              This element is affected by the following invariants: ele-1
              TypeExtension(Modified role) (Complex Extension)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              14. Questionnaire.extension:type
              Slice Nametype
              Definition

              Concept that represents the overall questionnaire

              ShortConcept that represents the overall questionnaire
              Control1..*
              This element is affected by the following invariants: ele-1
              TypeExtension(Questionnaire type) (Extension Type: CodeableConcept)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              16. Questionnaire.extension:styleSensitive
              Slice NamestyleSensitive
              Definition

              Indicates that the style extensions (style, markdown and xhtml) in this resource instance are essential to the interpretation of the instance and that systems that are not capable of rendering using those extensions should not be used to render the resource.

              ShortAre styles important for processing?
              Comments

              If set to true, all systems that claim to support this extension and that render elements from the resource SHALL either render the content as required by the style extensions (style, xhtml and markdown or shall indicate to the user that the resource (or specific elements in the resource) cannot be appropriately rendered by the system.

              For questionnaires, see additional guidance and examples in the SDC implementation guide.

              Control0..1
              TypeExtension(Style sensitive) (Extension Type: boolean)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              18. Questionnaire.extension:employeeTitle
              Slice NameemployeeTitle
              Definition

              Title for employed clinicians

              ShortTitle for clinicians
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Employee title) (Extension Type: string)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              20. Questionnaire.extension:usage
              Slice Nameusage
              Definition

              Description for clinicians

              Shortusage
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Usage) (Extension Type: string)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              22. Questionnaire.extension:predecessor
              Slice Namepredecessor
              Definition

              Version Predecessor

              ShortPredecessor
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Predecessor) (Extension Type: Identifier)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              24. Questionnaire.extension:base
              Slice Namebase
              Definition

              Version Base

              ShortBase
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Base) (Extension Type: Identifier)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              26. Questionnaire.extension:baseEnvironment
              Slice NamebaseEnvironment
              Definition

              Base environment

              ShortBase environment
              Control0..1
              This element is affected by the following invariants: ele-1
              TypeExtension(Base environment) (Extension Type: Identifier)
              Is Modifierfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              28. Questionnaire.modifierExtension
              Definition

              May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
              Summaryfalse
              Requirements

              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

              Alternate Namesextensions, user content
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              30. Questionnaire.version
              Definition

              The identifier that is used to identify this version of the questionnaire when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the questionnaire author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.

              ShortBusiness version of the questionnaire
              Comments

              There may be different questionnaire instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the questionnaire with the format [url]|[version].

              NoteThis is a business version Id, not a resource version Id (see discussion)
              Control10..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              32. Questionnaire.status
              Definition

              The status of this questionnaire. Enables tracking the life-cycle of the content.

              Shortdraft | active | retired | unknown
              Comments

              Allows filtering of questionnaires that are appropriate for use versus not.

              Control1..1
              BindingThe codes SHALL be taken from PublicationStatushttp://hl7.org/fhir/ValueSet/publication-status|4.0.1
              (required to http://hl7.org/fhir/ValueSet/publication-status|4.0.1)

              The lifecycle status of an artifact.

              Typecode
              Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              34. Questionnaire.jurisdiction
              Definition

              A legal or geographic region in which the questionnaire is intended to be used.

              ShortIntended jurisdiction for questionnaire (if applicable)
              Comments

              It may be possible for the questionnaire to be used in jurisdictions other than those for which it was originally designed or intended.

              Control0..*
              BindingThe codes SHALL be taken from Unless not suitable, these codes SHALL be taken from Jurisdictionhttp://hl7.org/fhir/ValueSet/jurisdiction
              (required to http://ehealth.sundhed.dk/vs/jurisdiction)
              TypeCodeableConcept
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              36. Questionnaire.item
              Definition

              A particular question, question grouping or display text that is part of the questionnaire.

              ShortQuestions and sections within the Questionnaire
              Comments

              The content of the questionnaire is constructed from an ordered, hierarchical collection of items.

              Control0..*
              This element is affected by the following invariants: que-3
              TypeBackboneElement
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              que-1: Group items must have nested items, display items cannot have nested items ((type='group' implies item.empty().not()) and (type.trace('type')='display' implies item.trace('item').empty()))
              que-3: Display items cannot have a "code" asserted (type!='display' or code.empty())
              que-4: A question cannot have both answerOption and answerValueSet (answerOption.empty() or answerValueSet.empty())
              que-5: Only 'choice' and 'open-choice' items can have answerValueSet ((type ='choice' or type = 'open-choice' or type = 'decimal' or type = 'integer' or type = 'date' or type = 'dateTime' or type = 'time' or type = 'string' or type = 'quantity') or (answerValueSet.empty() and answerOption.empty()))
              que-6: Required and repeat aren't permitted for display items (type!='display' or (required.empty() and repeats.empty()))
              que-8: Initial values can't be specified for groups or display items ((type!='group' and type!='display') or initial.empty())
              que-9: Read-only can't be specified for "display" items (type!='display' or readOnly.empty())
              que-10: Maximum length can only be declared for simple question types ((type in ('boolean' | 'decimal' | 'integer' | 'string' | 'text' | 'url' | 'open-choice')) or maxLength.empty())
              que-11: If one or more answerOption is present, initial[x] must be missing (answerOption.empty() or initial.empty())
              que-12: If there are more than one enableWhen, enableBehavior must be specified (enableWhen.count() > 2 implies enableBehavior.exists())
              que-13: Can only have multiple initial values for repeating items (repeats=true or initial.count() <= 1)
              sliderStepValueDecimal-Type: Item must have type='decimal' when using extension 'ehealth-questionnaire-sliderStepValueDecimal' (extension('http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-questionnaire-sliderStepValueDecimal').exists() implies type = 'decimal')
              que-1: Group items must have nested items, display items cannot have nested items ((type='group' implies item.empty().not()) and (type.trace('type')='display' implies item.trace('item').empty()))
              que-3: Display items cannot have a "code" asserted (type!='display' or code.empty())
              que-4: A question cannot have both answerOption and answerValueSet (answerOption.empty() or answerValueSet.empty())
              que-5: Only 'choice' and 'open-choice' items can have answerValueSet ((type ='choice' or type = 'open-choice' or type = 'decimal' or type = 'integer' or type = 'date' or type = 'dateTime' or type = 'time' or type = 'string' or type = 'quantity') or (answerValueSet.empty() and answerOption.empty()))
              que-6: Required and repeat aren't permitted for display items (type!='display' or (required.empty() and repeats.empty()))
              que-8: Initial values can't be specified for groups or display items ((type!='group' and type!='display') or initial.empty())
              que-9: Read-only can't be specified for "display" items (type!='display' or readOnly.empty())
              que-10: Maximum length can only be declared for simple question types ((type in ('boolean' | 'decimal' | 'integer' | 'string' | 'text' | 'url' | 'open-choice')) or maxLength.empty())
              que-11: If one or more answerOption is present, initial[x] must be missing (answerOption.empty() or initial.empty())
              que-12: If there are more than one enableWhen, enableBehavior must be specified (enableWhen.count() > 2 implies enableBehavior.exists())
              que-13: Can only have multiple initial values for repeating items (repeats=true or initial.count() <= 1)
              38. Questionnaire.item.extension
              Definition

              An Extension


              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              ShortExtensionAdditional content defined by implementations
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Alternate Namesextensions, user content
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              SlicingThis element introduces a set of slices on Questionnaire.item.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ url
              • 40. Questionnaire.item.extension:questionnaire-minOccurs
                Slice Namequestionnaire-minOccurs
                Definition

                The minimum number of times the group must appear, or the minimum number of answers for a question - when greater than 1.

                ShortMinimum repetitions
                Comments

                Default assumption for "required" elements is minOccurs=1. See additional guidance and examples in the SDC implementation guide.

                Control0..1
                TypeExtension(Questionnaire Min Occurs) (Extension Type: integer)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                42. Questionnaire.item.extension:questionnaire-maxOccurs
                Slice Namequestionnaire-maxOccurs
                Definition

                The maximum number of times the group must appear, or the maximum number of answers for a question - when greater than 1 and not unlimited.

                ShortMaximum repetitions
                Comments

                Only relevant if the element has repeats=true and there's a need to constrain the number of allowed repetitions. See additional guidance and examples in the SDC implementation guide.

                Control0..1
                TypeExtension(Questionnaire Max Occurs) (Extension Type: integer)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                44. Questionnaire.item.extension:minValue
                Slice NameminValue
                Definition

                The inclusive lower bound on the range of allowed values for the data element.

                ShortMust be >= this value
                Comments

                Data type specified must be the same as the data type for the data element. For questionnaires, see additional guidance and examples in the SDC implementation guide.

                Control0..1
                TypeExtension(Min value) (Extension Type: Choice of: date, dateTime, time, decimal, integer, Quantity)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                46. Questionnaire.item.extension:maxValue
                Slice NamemaxValue
                Definition

                The inclusive upper bound on the range of allowed values for the data element.

                ShortMust be <= this value
                Comments

                Data type specified must be the same as the data type for the data element. For questionnaires, see additional guidance and examples in the SDC implementation guide.

                Control0..1
                TypeExtension(Max value) (Extension Type: Choice of: date, dateTime, time, decimal, integer, Quantity)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                48. Questionnaire.item.extension:questionnaire-sliderStepValue
                Slice Namequestionnaire-sliderStepValue
                Definition

                For slider-based controls, indicates the step size to use when toggling the control up or down.

                ShortIncrement value for slider
                Comments

                See additional guidance and examples in the SDC implementation guide.

                Control0..1
                TypeExtension(Questionnaire Slider Step Value) (Extension Type: integer)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                50. Questionnaire.item.extension:questionnaire-sliderStepValueDecimal
                Slice Namequestionnaire-sliderStepValueDecimal
                Definition

                Defines a decimal number step-value for the slider in the questionnaire.

                ShortThe slider step-value as decimal-number
                Control0..1
                This element is affected by the following invariants: ele-1
                TypeExtension(Slider Step-value Decimal) (Extension Type: decimal)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                52. Questionnaire.item.extension:feedback
                Slice Namefeedback
                Definition

                Feedback if reponse is within the defined range.

                ShortFeedback if reponse is within the defined range.
                Control0..1
                This element is affected by the following invariants: ele-1
                TypeExtension(Feedback) (Complex Extension)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                54. Questionnaire.item.extension:overviewUsageMode
                Slice NameoverviewUsageMode
                Definition

                Identifies whether the specified element and/or results of the element should appear in overview or table presentation.

                ShortIdentifies whether the specified element and/or results of the element should appear in overview or table presentation.
                Control0..*
                This element is affected by the following invariants: ele-1
                TypeExtension(Overview usage mode) (Extension Type: CodeableConcept)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                56. Questionnaire.item.extension:itemControl
                Slice NameitemControl
                Definition

                The type of data entry control or structure that should be used to render the item.

                ShortE.g. Fly-over, Table, Checkbox, Combo-box, Lookup, etc.
                Comments

                Different controls may be appropriate for different item types. It is up to the system rendering a questionnaire as to what controls it will support and for which data types. See additional guidance and examples in the SDC implementation guide.

                Control0..1
                TypeExtension(Questionnaire Item Control) (Extension Type: CodeableConcept)
                Is Modifierfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                58. Questionnaire.item.extension:itemControl.extension
                Definition

                An Extension


                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                ShortExtensionAdditional content defined by implementations
                Comments

                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                Control0..0*
                TypeExtension
                Is Modifierfalse
                Summaryfalse
                Alternate Namesextensions, user content
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                SlicingThis element introduces a set of slices on Questionnaire.item.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • value @ url
                • 60. Questionnaire.item.extension:itemControl.url
                  Definition

                  Source of the definition for the extension code - a logical name or a URL.

                  Shortidentifies the meaning of the extension
                  Comments

                  The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

                  Control1..1
                  Typeuri
                  Is Modifierfalse
                  XML FormatIn the XML format, this property is represented as an attribute.
                  Summaryfalse
                  Fixed Valuehttp://hl7.org/fhir/StructureDefinition/questionnaire-itemControl
                  62. Questionnaire.item.extension:itemControl.value[x]
                  Definition

                  Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).


                  Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

                  ShortValue of extension
                  Control10..1
                  This element is affected by the following invariants: ext-1
                  BindingThe codes SHALL be taken from For codes, see Questionnaire Item Control
                  (required to http://ehealth.sundhed.dk/vs/questionnaire-item-control)
                  TypeCodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Summaryfalse
                  Requirements

                  The data type is CodeableConcept to allow for additional codings that might provide finer-grained control information or specification of specific controls in different rendering environments. CodeableConcept.text is generally unnecessary for this element and should not be sent alone as the use-case for this element is for computable interpretation by rendering engines.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  64. Questionnaire.item.extension:ehealth-question-image
                  Slice Nameehealth-question-image
                  Definition

                  Defines the images in the questionnaire answers and questions.

                  ShortThe image for a questionnaire
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeExtension(Questionnaire image) (Complex Extension)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  66. Questionnaire.item.extension:shortText
                  Slice NameshortText
                  Definition

                  Short text for questionnaires

                  ShortShort text
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeExtension(Short text) (Extension Type: string)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  68. Questionnaire.item.extension:helpText
                  Slice NamehelpText
                  Definition

                  Help text for questions. xhtml contains an equivalent of the text string, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                  ShortHelp text
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeExtension(Help text) (Complex Extension)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  70. Questionnaire.item.extension:answerSignificance
                  Slice NameanswerSignificance
                  Definition

                  Defines the Answer significance for an answer option in the questionnaire.

                  ShortThe Answer significance for an answer
                  Control0..*
                  This element is affected by the following invariants: ele-1
                  TypeExtension(Answer significance) (Complex Extension)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  72. Questionnaire.item.extension:externalIdentifier
                  Slice NameexternalIdentifier
                  Definition

                  External Identifier. Note that this Identifier does not have to unique within the Questionnaire.

                  ShortExternal Identifier
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeExtension(ExternalIdentifier) (Extension Type: Identifier)
                  Is Modifierfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  74. Questionnaire.item.modifierExtension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                  ShortExtensions that cannot be ignored even if unrecognized
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                  Summarytrue
                  Requirements

                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                  Alternate Namesextensions, user content, modifiers
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  76. Questionnaire.item.linkId
                  Definition

                  An identifier that is unique within the Questionnaire allowing linkage to the equivalent item in a QuestionnaireResponse resource.

                  ShortUnique id for item in questionnaire
                  Comments

                  This ''can'' be a meaningful identifier (e.g. a LOINC code) but is not intended to have any meaning. GUIDs or sequential numbers are appropriate here.

                  Control1..1
                  Typestring
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Requirements

                  QuestionnaireResponse does not require omitted items to be included and may have some items that repeat, so linkage based on position alone is not sufficient.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  78. Questionnaire.item.type
                  Definition

                  The type of questionnaire item this is - whether text for display, a grouping of other items or a particular type of data to be captured (string, integer, coded choice, etc.).

                  Shortgroup | display | boolean | decimal | integer | date | dateTime +
                  Comments

                  Additional constraints on the type of answer can be conveyed by extensions. The value may come from the ElementDefinition referred to by .definition.

                  Control1..1
                  BindingThe codes SHALL be taken from QuestionnaireItemTypehttp://hl7.org/fhir/ValueSet/item-type|4.0.1
                  (required to http://hl7.org/fhir/ValueSet/item-type|4.0.1)

                  Distinguishes groups from questions and display text and indicates data type for questions.

                  Typecode
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Requirements

                  Defines the format in which the user is to be prompted for the answer.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  80. Questionnaire.item.enableWhen
                  Definition

                  A constraint indicating that this item should only be enabled (displayed/allow answers to be captured) when the specified condition is true.

                  ShortOnly allow data when
                  Comments

                  If multiple repetitions of this extension are present, the item should be enabled when the condition for any of the repetitions is true. I.e. treat "enableWhen"s as being joined by an "or" clause. This element is a modifier because if enableWhen is present for an item, "required" is ignored unless one of the enableWhen conditions is met. When an item is disabled, all of its descendants are disabled, regardless of what their own enableWhen logic might evaluate to.

                  Control0..*
                  TypeBackboneElement
                  Is Modifiertrue because If enableWhen is present and the condition evaluates to false, then the Questionnaire behaves as though the elements weren't actually present
                  Summaryfalse
                  Requirements

                  Allows questionnaires to adapt based on answers to other questions. E.g. If physical gender is specified as a male, no need to capture pregnancy history. Also allows conditional display of instructions or groups of questions.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  que-7: If the operator is 'exists', the value must be a boolean (operator = 'exists' implies (answer is Boolean))
                  que-7: If the operator is 'exists', the value must be a boolean (operator = 'exists' implies (answer is Boolean))
                  82. Questionnaire.item.enableWhen.modifierExtension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                  ShortExtensions that cannot be ignored even if unrecognized
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                  Summarytrue
                  Requirements

                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                  Alternate Namesextensions, user content, modifiers
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  84. Questionnaire.item.enableWhen.question
                  Definition

                  The linkId for the question whose answer (or lack of answer) governs whether this item is enabled.

                  ShortQuestion that determines whether item is enabled
                  Comments

                  If multiple question occurrences are present for the same question (same linkId), then this refers to the nearest question occurrence reachable by tracing first the "ancestor" axis and then the "preceding" axis and then the "following" axis.

                  Control1..1
                  Typestring
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  86. Questionnaire.item.enableWhen.operator
                  Definition

                  Specifies the criteria by which the question is enabled.

                  Shortexists | = | != | > | < | >= | <=
                  Control1..1
                  BindingThe codes SHALL be taken from QuestionnaireItemOperatorhttp://hl7.org/fhir/ValueSet/questionnaire-enable-operator|4.0.1
                  (required to http://hl7.org/fhir/ValueSet/questionnaire-enable-operator|4.0.1)

                  The criteria by which a question is enabled.

                  Typecode
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  88. Questionnaire.item.enableWhen.answer[x]
                  Definition

                  A value that the referenced question is tested using the specified operator in order for the item to be enabled.

                  ShortValue for question comparison based on operator
                  Control1..1
                  This element is affected by the following invariants: que-7
                  BindingFor example codes, see QuestionnaireAnswerCodeshttp://hl7.org/fhir/ValueSet/questionnaire-answers
                  (example to http://hl7.org/fhir/ValueSet/questionnaire-answers)

                  Allowed values to answer questions.

                  TypeChoice of: boolean, decimal, integer, date, dateTime, time, string, Coding, Quantity, Reference(Resource)
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  90. Questionnaire.item.answerValueSet
                  Definition

                  A reference to a value set containing a list of codes representing permitted answers for a "choice" or "open-choice" question.

                  ShortValueset containing permitted answers
                  Comments

                  LOINC defines many useful value sets for questionnaire responses. See LOINC Answer Lists. The value may come from the ElementDefinition referred to by .definition.

                  Control0..1
                  This element is affected by the following invariants: que-4, que-5
                  Typecanonical(ValueSet)
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  92. Questionnaire.item.answerOption
                  Definition

                  One of the permitted answers for a "choice" or "open-choice" question.

                  ShortPermitted answer
                  Comments

                  This element can be used when the value set machinery of answerValueSet is deemed too cumbersome or when there's a need to capture possible answers that are not codes.

                  Control0..*
                  This element is affected by the following invariants: que-4, que-5
                  TypeBackboneElement
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  94. Questionnaire.item.answerOption.extension
                  Definition

                  An Extension


                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                  ShortExtensionAdditional content defined by implementations
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifierfalse
                  Summaryfalse
                  Alternate Namesextensions, user content
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  SlicingThis element introduces a set of slices on Questionnaire.item.answerOption.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ url
                  • 96. Questionnaire.item.answerOption.extension:ehealth-answeroption-image
                    Slice Nameehealth-answeroption-image
                    Definition

                    Defines the images in the questionnaire answers and questions.

                    ShortThe image for a questionnaire
                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeExtension(Questionnaire image) (Complex Extension)
                    Is Modifierfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    98. Questionnaire.item.answerOption.modifierExtension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                    ShortExtensions that cannot be ignored even if unrecognized
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                    Summarytrue
                    Requirements

                    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                    Alternate Namesextensions, user content, modifiers
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    100. Questionnaire.item.answerOption.value[x]
                    Definition

                    A potential answer that's allowed as the answer to this question.

                    ShortAnswer value
                    Comments

                    The data type of the value must agree with the item.type.

                    Control1..1
                    BindingFor example codes, see QuestionnaireAnswerCodeshttp://hl7.org/fhir/ValueSet/questionnaire-answers
                    (example to http://hl7.org/fhir/ValueSet/questionnaire-answers)

                    Allowed values to answer questions.

                    TypeChoice of: integer, date, time, string, Coding, Reference(Resource)
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    102. Questionnaire.item.answerOption.value[x].extension:xhtml
                    Slice Namexhtml
                    Definition

                    This is an equivalent of the string on which the extension is sent, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                    ShortString equivalent with html markup
                    Comments

                    For questionnaires, see additional guidance and examples in the SDC implementation guide.

                    Control0..1
                    TypeExtension(XHTML Representation) (Extension Type: string)
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    104. Questionnaire.item.initial
                    Definition

                    One or more values that should be pre-populated in the answer when initially rendering the questionnaire for user input.

                    ShortInitial value(s) when item is first rendered
                    Comments

                    The user is allowed to change the value and override the default (unless marked as read-only). If the user doesn't change the value, then this initial value will be persisted when the QuestionnaireResponse is initially created. Note that initial values can influence results. The data type of initial[x] must agree with the item.type, and only repeating items can have more then one initial value.

                    Control0..*
                    This element is affected by the following invariants: que-8, que-13
                    TypeBackboneElement
                    Is Modifierfalse
                    Summaryfalse
                    Requirements

                    In some workflows, having defaults saves time.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    106. Questionnaire.item.initial.modifierExtension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                    ShortExtensions that cannot be ignored even if unrecognized
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                    Summarytrue
                    Requirements

                    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                    Alternate Namesextensions, user content, modifiers
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    108. Questionnaire.item.initial.value[x]
                    Definition

                    The actual value to for an initial answer.

                    ShortActual value for initializing the question
                    Comments

                    The type of the initial value must be consistent with the type of the item.

                    Control1..1
                    BindingFor example codes, see QuestionnaireAnswerCodeshttp://hl7.org/fhir/ValueSet/questionnaire-answers
                    (example to http://hl7.org/fhir/ValueSet/questionnaire-answers)

                    Allowed values to answer questions.

                    TypeChoice of: boolean, decimal, integer, date, dateTime, time, string, uri, Attachment, Coding, Quantity, Reference(Resource)
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    110. Questionnaire.item.initial.value[x].extension:xhtml
                    Slice Namexhtml
                    Definition

                    This is an equivalent of the string on which the extension is sent, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                    ShortString equivalent with html markup
                    Comments

                    For questionnaires, see additional guidance and examples in the SDC implementation guide.

                    Control0..1
                    TypeExtension(XHTML Representation) (Extension Type: string)
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())

                    Guidance on how to interpret the contents of this table can be found here

                    0. Questionnaire
                    Definition

                    A structured set of questions intended to guide the collection of answers from end-users. Questionnaires provide detailed control over order, presentation, phraseology and grouping to allow coherent, consistent data collection.

                    ShortA structured set of questions
                    Control0..*
                    Is Modifierfalse
                    Summaryfalse
                    Alternate NamesForm, CRF, Survey
                    Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
                    dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
                    dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
                    dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
                    dom-6: A resource should have narrative for robust management (text.`div`.exists())
                    que-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
                    que-2: The link ids for groups and questions must be unique within the questionnaire (descendants().linkId.isDistinct())
                    2. Questionnaire.id
                    Definition

                    The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

                    ShortLogical id of this artifact
                    Comments

                    The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

                    Control0..1
                    Typeid
                    Is Modifierfalse
                    Summarytrue
                    4. Questionnaire.meta
                    Definition

                    The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

                    ShortMetadata about the resource
                    Control0..1
                    TypeMeta
                    Is Modifierfalse
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    6. Questionnaire.implicitRules
                    Definition

                    A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

                    ShortA set of rules under which this content was created
                    Comments

                    Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

                    Control0..1
                    Typeuri
                    Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    8. Questionnaire.language
                    Definition

                    The base language in which the resource is written.

                    ShortLanguage of the resource content
                    Comments

                    Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

                    Control0..1
                    BindingThe codes SHOULD be taken from CommonLanguages
                    (preferred to http://hl7.org/fhir/ValueSet/languages)

                    A human language.

                    Additional BindingsPurpose
                    AllLanguagesMax Binding
                    Typecode
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    10. Questionnaire.text
                    Definition

                    A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

                    ShortText summary of the resource, for human interpretation
                    Comments

                    Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

                    Control0..1
                    TypeNarrative
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesnarrative, html, xhtml, display
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    12. Questionnaire.contained
                    Definition

                    These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

                    ShortContained, inline Resources
                    Comments

                    This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

                    Control0..*
                    TypeResource
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesinline resources, anonymous resources, contained resources
                    14. Questionnaire.extension
                    Definition

                    An Extension

                    ShortExtension
                    Control2..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on Questionnaire.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 16. Questionnaire.extension:recommendation
                      Slice Namerecommendation
                      Definition

                      Defines the recommendation state of the questionnaire.

                      ShortDegree to which this questionnaire is recommended for use.
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Questionnaire recommendation) (Extension Type: CodeableConcept)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      18. Questionnaire.extension:intendedOrganization
                      Slice NameintendedOrganization
                      Definition

                      The questionnaire is intended to be used by these organizations.

                      ShortThe organization intended to use this questionnaire.
                      Control0..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Questionnaire intended organization) (Extension Type: Reference(ehealth-organization)referenced)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      20. Questionnaire.extension:revision
                      Slice Namerevision
                      Definition

                      Business revision of the resource

                      ShortBusiness revision
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Revision) (Extension Type: string)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      22. Questionnaire.extension:modifierRole
                      Slice NamemodifierRole
                      Definition

                      This is a modifier role that can hold a role and a reference to the item who has the role. Ex. owner + a reference to the owner organization.

                      ShortModifier role
                      Control1..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Modified role) (Complex Extension)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      24. Questionnaire.extension:type
                      Slice Nametype
                      Definition

                      Concept that represents the overall questionnaire

                      ShortConcept that represents the overall questionnaire
                      Control1..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Questionnaire type) (Extension Type: CodeableConcept)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      26. Questionnaire.extension:styleSensitive
                      Slice NamestyleSensitive
                      Definition

                      Indicates that the style extensions (style, markdown and xhtml) in this resource instance are essential to the interpretation of the instance and that systems that are not capable of rendering using those extensions should not be used to render the resource.

                      ShortAre styles important for processing?
                      Comments

                      If set to true, all systems that claim to support this extension and that render elements from the resource SHALL either render the content as required by the style extensions (style, xhtml and markdown or shall indicate to the user that the resource (or specific elements in the resource) cannot be appropriately rendered by the system.

                      For questionnaires, see additional guidance and examples in the SDC implementation guide.

                      Control0..1
                      TypeExtension(Style sensitive) (Extension Type: boolean)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      28. Questionnaire.extension:employeeTitle
                      Slice NameemployeeTitle
                      Definition

                      Title for employed clinicians

                      ShortTitle for clinicians
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Employee title) (Extension Type: string)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      30. Questionnaire.extension:usage
                      Slice Nameusage
                      Definition

                      Description for clinicians

                      Shortusage
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Usage) (Extension Type: string)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      32. Questionnaire.extension:predecessor
                      Slice Namepredecessor
                      Definition

                      Version Predecessor

                      ShortPredecessor
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Predecessor) (Extension Type: Identifier)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      34. Questionnaire.extension:base
                      Slice Namebase
                      Definition

                      Version Base

                      ShortBase
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Base) (Extension Type: Identifier)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      36. Questionnaire.extension:baseEnvironment
                      Slice NamebaseEnvironment
                      Definition

                      Base environment

                      ShortBase environment
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Base environment) (Extension Type: Identifier)
                      Is Modifierfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      38. Questionnaire.modifierExtension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                      ShortExtensions that cannot be ignored
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                      Summaryfalse
                      Requirements

                      Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                      Alternate Namesextensions, user content
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      40. Questionnaire.url
                      Definition

                      An absolute URI that is used to identify this questionnaire when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this questionnaire is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the questionnaire is stored on different servers.

                      ShortCanonical identifier for this questionnaire, represented as a URI (globally unique)
                      Comments

                      The name of the referenced questionnaire can be conveyed using the http://hl7.org/fhir/StructureDefinition/display extension.

                      Control0..1
                      Typeuri
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      … This is the id that will be used to link a QuestionnaireResponse to the Questionnaire the response is for.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      42. Questionnaire.identifier
                      Definition

                      A formal identifier that is used to identify this questionnaire when it is represented in other formats, or referenced in a specification, model, design or an instance.

                      ShortAdditional identifier for the questionnaire
                      Comments

                      Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this questionnaire outside of FHIR, where it is not possible to use the logical URI.

                      NoteThis is a business identifier, not a resource identifier (see discussion)
                      Control0..*
                      TypeIdentifier
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Allows externally provided and/or usable business identifiers to be easily associated with the module.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      44. Questionnaire.version
                      Definition

                      The identifier that is used to identify this version of the questionnaire when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the questionnaire author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.

                      ShortBusiness version of the questionnaire
                      Comments

                      There may be different questionnaire instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the questionnaire with the format [url]|[version].

                      NoteThis is a business version Id, not a resource version Id (see discussion)
                      Control1..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      46. Questionnaire.name
                      Definition

                      A natural language name identifying the questionnaire. This name should be usable as an identifier for the module by machine processing applications such as code generation.

                      ShortName for this questionnaire (computer friendly)
                      Comments

                      The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.

                      Control0..1
                      This element is affected by the following invariants: inv-0
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Support human navigation and code generation.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      48. Questionnaire.title
                      Definition

                      A short, descriptive, user-friendly title for the questionnaire.

                      ShortName for this questionnaire (human friendly)
                      Comments

                      This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.

                      Control0..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      50. Questionnaire.derivedFrom
                      Definition

                      The URL of a Questionnaire that this Questionnaire is based on.

                      ShortInstantiates protocol or definition
                      Control0..*
                      Typecanonical(Questionnaire)
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Requirements

                      Allows a Questionnaire to be created based on another Questionnaire.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      52. Questionnaire.status
                      Definition

                      The status of this questionnaire. Enables tracking the life-cycle of the content.

                      Shortdraft | active | retired | unknown
                      Comments

                      Allows filtering of questionnaires that are appropriate for use versus not.

                      Control1..1
                      BindingThe codes SHALL be taken from PublicationStatus
                      (required to http://hl7.org/fhir/ValueSet/publication-status|4.0.1)

                      The lifecycle status of an artifact.

                      Typecode
                      Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      54. Questionnaire.experimental
                      Definition

                      A Boolean value to indicate that this questionnaire is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage.

                      ShortFor testing purposes, not real usage
                      Comments

                      Allows filtering of questionnaires that are appropriate for use versus not.

                      Control0..1
                      Typeboolean
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Enables experimental content to be developed following the same lifecycle that would be used for a production-level questionnaire.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      56. Questionnaire.subjectType
                      Definition

                      The types of subjects that can be the subject of responses created for the questionnaire.

                      ShortResource that can be subject of QuestionnaireResponse
                      Comments

                      If none are specified, then the subject is unlimited.

                      Control0..*
                      BindingThe codes SHALL be taken from ResourceType
                      (required to http://hl7.org/fhir/ValueSet/resource-types|4.0.1)

                      One of the resource types defined as part of this version of FHIR.

                      Typecode
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      58. Questionnaire.date
                      Definition

                      The date (and optionally time) when the questionnaire was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the questionnaire changes.

                      ShortDate last changed
                      Comments

                      Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the questionnaire. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

                      Control0..1
                      TypedateTime
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Alternate NamesRevision Date
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      60. Questionnaire.publisher
                      Definition

                      The name of the organization or individual that published the questionnaire.

                      ShortName of the publisher (organization or individual)
                      Comments

                      Usually an organization but may be an individual. The publisher (or steward) of the questionnaire is the organization or individual primarily responsible for the maintenance and upkeep of the questionnaire. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the questionnaire. This item SHOULD be populated unless the information is available from context.

                      Control0..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      Helps establish the "authority/credibility" of the questionnaire. May also allow for contact.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      62. Questionnaire.contact
                      Definition

                      Contact details to assist a user in finding and communicating with the publisher.

                      ShortContact details for the publisher
                      Comments

                      May be a web site, an email address, a telephone number, etc.

                      Control0..*
                      TypeContactDetail
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      64. Questionnaire.description
                      Definition

                      A free text natural language description of the questionnaire from a consumer's perspective.

                      ShortNatural language description of the questionnaire
                      Comments

                      This description can be used to capture details such as why the questionnaire was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the questionnaire as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the questionnaire is presumed to be the predominant language in the place the questionnaire was created).

                      Control0..1
                      Typemarkdown
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      66. Questionnaire.useContext
                      Definition

                      The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate questionnaire instances.

                      ShortThe context that the content is intended to support
                      Comments

                      When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.

                      Control0..*
                      TypeUsageContext
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Assist in searching for appropriate content.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      68. Questionnaire.jurisdiction
                      Definition

                      A legal or geographic region in which the questionnaire is intended to be used.

                      ShortIntended jurisdiction for questionnaire (if applicable)
                      Comments

                      It may be possible for the questionnaire to be used in jurisdictions other than those for which it was originally designed or intended.

                      Control0..*
                      BindingThe codes SHALL be taken from Jurisdiction
                      (required to http://ehealth.sundhed.dk/vs/jurisdiction)
                      TypeCodeableConcept
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      70. Questionnaire.purpose
                      Definition

                      Explanation of why this questionnaire is needed and why it has been designed as it has.

                      ShortWhy this questionnaire is defined
                      Comments

                      This element does not describe the usage of the questionnaire. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this questionnaire.

                      Control0..1
                      Typemarkdown
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      72. Questionnaire.copyright
                      Definition

                      A copyright statement relating to the questionnaire and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the questionnaire.

                      ShortUse and/or publishing restrictions
                      Control0..1
                      Typemarkdown
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Requirements

                      Consumers must be able to determine any legal restrictions on the use of the questionnaire and/or its content.

                      Alternate NamesLicense, Restrictions
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      74. Questionnaire.approvalDate
                      Definition

                      The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.

                      ShortWhen the questionnaire was approved by publisher
                      Comments

                      The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

                      Control0..1
                      Typedate
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      76. Questionnaire.lastReviewDate
                      Definition

                      The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date.

                      ShortWhen the questionnaire was last reviewed
                      Comments

                      If specified, this date follows the original approval date.

                      Control0..1
                      Typedate
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Requirements

                      Gives a sense of how "current" the content is. Resources that have not been reviewed in a long time may have a risk of being less appropriate/relevant.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      78. Questionnaire.effectivePeriod
                      Definition

                      The period during which the questionnaire content was or is planned to be in active use.

                      ShortWhen the questionnaire is expected to be used
                      Comments

                      The effective period for a questionnaire determines when the content is applicable for usage and is independent of publication and review dates. For example, a measure intended to be used for the year 2016 might be published in 2015.

                      Control0..1
                      TypePeriod
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Allows establishing a transition before a resource comes into effect and also allows for a sunsetting process when new versions of the questionnaire are or are expected to be used instead.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      80. Questionnaire.code
                      Definition

                      An identifier for this question or group of questions in a particular terminology such as LOINC.

                      ShortConcept that represents the overall questionnaire
                      Control0..*
                      BindingFor example codes, see QuestionnaireQuestionCodes
                      (example to http://hl7.org/fhir/ValueSet/questionnaire-questions)

                      Codes for questionnaires, groups and individual questions.

                      TypeCoding
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Allows linking of the complete Questionnaire resources to formal terminologies. It's common for "panels" of questions to be identified by a code.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      82. Questionnaire.item
                      Definition

                      A particular question, question grouping or display text that is part of the questionnaire.

                      ShortQuestions and sections within the Questionnaire
                      Comments

                      The content of the questionnaire is constructed from an ordered, hierarchical collection of items.

                      Control0..*
                      This element is affected by the following invariants: que-3
                      TypeBackboneElement
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      que-1: Group items must have nested items, display items cannot have nested items ((type='group' implies item.empty().not()) and (type.trace('type')='display' implies item.trace('item').empty()))
                      que-3: Display items cannot have a "code" asserted (type!='display' or code.empty())
                      que-4: A question cannot have both answerOption and answerValueSet (answerOption.empty() or answerValueSet.empty())
                      que-5: Only 'choice' and 'open-choice' items can have answerValueSet ((type ='choice' or type = 'open-choice' or type = 'decimal' or type = 'integer' or type = 'date' or type = 'dateTime' or type = 'time' or type = 'string' or type = 'quantity') or (answerValueSet.empty() and answerOption.empty()))
                      que-6: Required and repeat aren't permitted for display items (type!='display' or (required.empty() and repeats.empty()))
                      que-8: Initial values can't be specified for groups or display items ((type!='group' and type!='display') or initial.empty())
                      que-9: Read-only can't be specified for "display" items (type!='display' or readOnly.empty())
                      que-10: Maximum length can only be declared for simple question types ((type in ('boolean' | 'decimal' | 'integer' | 'string' | 'text' | 'url' | 'open-choice')) or maxLength.empty())
                      que-11: If one or more answerOption is present, initial[x] must be missing (answerOption.empty() or initial.empty())
                      que-12: If there are more than one enableWhen, enableBehavior must be specified (enableWhen.count() > 2 implies enableBehavior.exists())
                      que-13: Can only have multiple initial values for repeating items (repeats=true or initial.count() <= 1)
                      sliderStepValueDecimal-Type: Item must have type='decimal' when using extension 'ehealth-questionnaire-sliderStepValueDecimal' (extension('http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-questionnaire-sliderStepValueDecimal').exists() implies type = 'decimal')
                      84. Questionnaire.item.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      86. Questionnaire.item.extension
                      Definition

                      An Extension

                      ShortExtension
                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      SlicingThis element introduces a set of slices on Questionnaire.item.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 88. Questionnaire.item.extension:questionnaire-minOccurs
                        Slice Namequestionnaire-minOccurs
                        Definition

                        The minimum number of times the group must appear, or the minimum number of answers for a question - when greater than 1.

                        ShortMinimum repetitions
                        Comments

                        Default assumption for "required" elements is minOccurs=1. See additional guidance and examples in the SDC implementation guide.

                        Control0..1
                        TypeExtension(Questionnaire Min Occurs) (Extension Type: integer)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        90. Questionnaire.item.extension:questionnaire-maxOccurs
                        Slice Namequestionnaire-maxOccurs
                        Definition

                        The maximum number of times the group must appear, or the maximum number of answers for a question - when greater than 1 and not unlimited.

                        ShortMaximum repetitions
                        Comments

                        Only relevant if the element has repeats=true and there's a need to constrain the number of allowed repetitions. See additional guidance and examples in the SDC implementation guide.

                        Control0..1
                        TypeExtension(Questionnaire Max Occurs) (Extension Type: integer)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        92. Questionnaire.item.extension:minValue
                        Slice NameminValue
                        Definition

                        The inclusive lower bound on the range of allowed values for the data element.

                        ShortMust be >= this value
                        Comments

                        Data type specified must be the same as the data type for the data element. For questionnaires, see additional guidance and examples in the SDC implementation guide.

                        Control0..1
                        TypeExtension(Min value) (Extension Type: Choice of: date, dateTime, time, decimal, integer, Quantity)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        94. Questionnaire.item.extension:maxValue
                        Slice NamemaxValue
                        Definition

                        The inclusive upper bound on the range of allowed values for the data element.

                        ShortMust be <= this value
                        Comments

                        Data type specified must be the same as the data type for the data element. For questionnaires, see additional guidance and examples in the SDC implementation guide.

                        Control0..1
                        TypeExtension(Max value) (Extension Type: Choice of: date, dateTime, time, decimal, integer, Quantity)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        96. Questionnaire.item.extension:questionnaire-sliderStepValue
                        Slice Namequestionnaire-sliderStepValue
                        Definition

                        For slider-based controls, indicates the step size to use when toggling the control up or down.

                        ShortIncrement value for slider
                        Comments

                        See additional guidance and examples in the SDC implementation guide.

                        Control0..1
                        TypeExtension(Questionnaire Slider Step Value) (Extension Type: integer)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        98. Questionnaire.item.extension:questionnaire-sliderStepValueDecimal
                        Slice Namequestionnaire-sliderStepValueDecimal
                        Definition

                        Defines a decimal number step-value for the slider in the questionnaire.

                        ShortThe slider step-value as decimal-number
                        Control0..1
                        This element is affected by the following invariants: ele-1
                        TypeExtension(Slider Step-value Decimal) (Extension Type: decimal)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        100. Questionnaire.item.extension:feedback
                        Slice Namefeedback
                        Definition

                        Feedback if reponse is within the defined range.

                        ShortFeedback if reponse is within the defined range.
                        Control0..1
                        This element is affected by the following invariants: ele-1
                        TypeExtension(Feedback) (Complex Extension)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        102. Questionnaire.item.extension:overviewUsageMode
                        Slice NameoverviewUsageMode
                        Definition

                        Identifies whether the specified element and/or results of the element should appear in overview or table presentation.

                        ShortIdentifies whether the specified element and/or results of the element should appear in overview or table presentation.
                        Control0..*
                        This element is affected by the following invariants: ele-1
                        TypeExtension(Overview usage mode) (Extension Type: CodeableConcept)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        104. Questionnaire.item.extension:itemControl
                        Slice NameitemControl
                        Definition

                        The type of data entry control or structure that should be used to render the item.

                        ShortE.g. Fly-over, Table, Checkbox, Combo-box, Lookup, etc.
                        Comments

                        Different controls may be appropriate for different item types. It is up to the system rendering a questionnaire as to what controls it will support and for which data types. See additional guidance and examples in the SDC implementation guide.

                        Control0..1
                        TypeExtension(Questionnaire Item Control) (Extension Type: CodeableConcept)
                        Is Modifierfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        106. Questionnaire.item.extension:itemControl.id
                        Definition

                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                        ShortUnique id for inter-element referencing
                        Control0..1
                        This element is affected by the following invariants: ele-1
                        Typeid
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        108. Questionnaire.item.extension:itemControl.extension
                        Definition

                        An Extension

                        ShortExtension
                        Control0..0
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        SlicingThis element introduces a set of slices on Questionnaire.item.extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 110. Questionnaire.item.extension:itemControl.url
                          Definition

                          Source of the definition for the extension code - a logical name or a URL.

                          Shortidentifies the meaning of the extension
                          Comments

                          The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

                          Control1..1
                          Typeuri
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          Fixed Valuehttp://hl7.org/fhir/StructureDefinition/questionnaire-itemControl
                          112. Questionnaire.item.extension:itemControl.value[x]
                          Definition

                          Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

                          ShortValue of extension
                          Control1..1
                          This element is affected by the following invariants: ext-1
                          BindingThe codes SHALL be taken from Questionnaire Item Control
                          (required to http://ehealth.sundhed.dk/vs/questionnaire-item-control)
                          TypeCodeableConcept
                          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                          Is Modifierfalse
                          Summaryfalse
                          Requirements

                          The data type is CodeableConcept to allow for additional codings that might provide finer-grained control information or specification of specific controls in different rendering environments. CodeableConcept.text is generally unnecessary for this element and should not be sent alone as the use-case for this element is for computable interpretation by rendering engines.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          114. Questionnaire.item.extension:ehealth-question-image
                          Slice Nameehealth-question-image
                          Definition

                          Defines the images in the questionnaire answers and questions.

                          ShortThe image for a questionnaire
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          TypeExtension(Questionnaire image) (Complex Extension)
                          Is Modifierfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          116. Questionnaire.item.extension:shortText
                          Slice NameshortText
                          Definition

                          Short text for questionnaires

                          ShortShort text
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          TypeExtension(Short text) (Extension Type: string)
                          Is Modifierfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          118. Questionnaire.item.extension:helpText
                          Slice NamehelpText
                          Definition

                          Help text for questions. xhtml contains an equivalent of the text string, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                          ShortHelp text
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          TypeExtension(Help text) (Complex Extension)
                          Is Modifierfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          120. Questionnaire.item.extension:answerSignificance
                          Slice NameanswerSignificance
                          Definition

                          Defines the Answer significance for an answer option in the questionnaire.

                          ShortThe Answer significance for an answer
                          Control0..*
                          This element is affected by the following invariants: ele-1
                          TypeExtension(Answer significance) (Complex Extension)
                          Is Modifierfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          122. Questionnaire.item.extension:externalIdentifier
                          Slice NameexternalIdentifier
                          Definition

                          External Identifier. Note that this Identifier does not have to unique within the Questionnaire.

                          ShortExternal Identifier
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          TypeExtension(ExternalIdentifier) (Extension Type: Identifier)
                          Is Modifierfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          124. Questionnaire.item.modifierExtension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                          ShortExtensions that cannot be ignored even if unrecognized
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                          Summarytrue
                          Requirements

                          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                          Alternate Namesextensions, user content, modifiers
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          126. Questionnaire.item.linkId
                          Definition

                          An identifier that is unique within the Questionnaire allowing linkage to the equivalent item in a QuestionnaireResponse resource.

                          ShortUnique id for item in questionnaire
                          Comments

                          This ''can'' be a meaningful identifier (e.g. a LOINC code) but is not intended to have any meaning. GUIDs or sequential numbers are appropriate here.

                          Control1..1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summaryfalse
                          Requirements

                          QuestionnaireResponse does not require omitted items to be included and may have some items that repeat, so linkage based on position alone is not sufficient.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          128. Questionnaire.item.definition
                          Definition

                          This element is a URI that refers to an ElementDefinition that provides information about this item, including information that might otherwise be included in the instance of the Questionnaire resource. A detailed description of the construction of the URI is shown in Comments, below. If this element is present then the following element values MAY be derived from the Element Definition if the corresponding elements of this Questionnaire resource instance have no value:

                          • code (ElementDefinition.code)
                          • type (ElementDefinition.type)
                          • required (ElementDefinition.min)
                          • repeats (ElementDefinition.max)
                          • maxLength (ElementDefinition.maxLength)
                          • answerValueSet (ElementDefinition.binding)
                          • options (ElementDefinition.binding).
                          ShortElementDefinition - details for the item
                          Comments

                          The uri refers to an ElementDefinition in a StructureDefinition and always starts with the canonical URL for the target resource. When referring to a StructureDefinition, a fragment identifier is used to specify the element definition by its id Element.id. E.g. http://hl7.org/fhir/StructureDefinition/Observation#Observation.value[x]. In the absence of a fragment identifier, the first/root element definition in the target is the matching element definition.

                          Control0..1
                          Typeuri
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summaryfalse
                          Requirements

                          A common pattern is to define a set of data elements and then build multiple questionnaires for different circumstances to gather the data. This element provides traceability to the common definition and allows the content for the question to come from the underlying definition.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          130. Questionnaire.item.code
                          Definition

                          A terminology code that corresponds to this group or question (e.g. a code from LOINC, which defines many questions and answers).

                          ShortCorresponding concept for this item in a terminology
                          Comments

                          The value may come from the ElementDefinition referred to by .definition.

                          Control0..*
                          This element is affected by the following invariants: que-3
                          BindingFor example codes, see QuestionnaireQuestionCodes
                          (example to http://hl7.org/fhir/ValueSet/questionnaire-questions)

                          Codes for questionnaires, groups and individual questions.

                          TypeCoding
                          Is Modifierfalse
                          Summaryfalse
                          Requirements

                          Allows linking of groups of questions to formal terminologies.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          132. Questionnaire.item.prefix
                          Definition

                          A short label for a particular group, question or set of display text within the questionnaire used for reference by the individual completing the questionnaire.

                          ShortE.g. "1(a)", "2.5.3"
                          Comments

                          These are generally unique within a questionnaire, though this is not guaranteed. Some questionnaires may have multiple questions with the same label with logic to control which gets exposed. Typically, these won't be used for "display" items, though such use is not prohibited. Systems SHOULD NOT generate their own prefixes if prefixes are defined for any items within a Questionnaire.

                          Control0..1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summaryfalse
                          Requirements

                          Separating the label from the question text allows improved rendering. Also, instructions will often refer to specific prefixes, so there's a need for the questionnaire design to have control over what labels are used.

                          Alternate Nameslabel
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          134. Questionnaire.item.text
                          Definition

                          The name of a section, the text of a question or text content for a display item.

                          ShortPrimary text for the item
                          Comments

                          When using this element to represent the name of a section, use group type item and also make sure to limit the text element to a short string suitable for display as a section heading. Group item instructions should be included as a display type item within the group.

                          Control0..1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          136. Questionnaire.item.text.id
                          Definition

                          unique id for the element within a resource (for internal references)

                          Shortxml:id (or equivalent in JSON)
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          138. Questionnaire.item.text.extension
                          Definition

                          An Extension

                          ShortExtension
                          Control0..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          SlicingThis element introduces a set of slices on Questionnaire.item.text.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • value @ url
                          • 140. Questionnaire.item.text.extension:xhtml
                            Slice Namexhtml
                            Definition

                            This is an equivalent of the string on which the extension is sent, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                            ShortString equivalent with html markup
                            Comments

                            For questionnaires, see additional guidance and examples in the SDC implementation guide.

                            Control0..1
                            TypeExtension(XHTML Representation) (Extension Type: string)
                            Is Modifierfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            142. Questionnaire.item.text.value
                            Definition

                            The actual value

                            ShortPrimitive value for string
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            Max Length:1048576
                            144. Questionnaire.item.type
                            Definition

                            The type of questionnaire item this is - whether text for display, a grouping of other items or a particular type of data to be captured (string, integer, coded choice, etc.).

                            Shortgroup | display | boolean | decimal | integer | date | dateTime +
                            Comments

                            Additional constraints on the type of answer can be conveyed by extensions. The value may come from the ElementDefinition referred to by .definition.

                            Control1..1
                            BindingThe codes SHALL be taken from QuestionnaireItemType
                            (required to http://hl7.org/fhir/ValueSet/item-type|4.0.1)

                            Distinguishes groups from questions and display text and indicates data type for questions.

                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Requirements

                            Defines the format in which the user is to be prompted for the answer.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            146. Questionnaire.item.enableWhen
                            Definition

                            A constraint indicating that this item should only be enabled (displayed/allow answers to be captured) when the specified condition is true.

                            ShortOnly allow data when
                            Comments

                            If multiple repetitions of this extension are present, the item should be enabled when the condition for any of the repetitions is true. I.e. treat "enableWhen"s as being joined by an "or" clause. This element is a modifier because if enableWhen is present for an item, "required" is ignored unless one of the enableWhen conditions is met. When an item is disabled, all of its descendants are disabled, regardless of what their own enableWhen logic might evaluate to.

                            Control0..*
                            TypeBackboneElement
                            Is Modifiertrue because If enableWhen is present and the condition evaluates to false, then the Questionnaire behaves as though the elements weren't actually present
                            Summaryfalse
                            Requirements

                            Allows questionnaires to adapt based on answers to other questions. E.g. If physical gender is specified as a male, no need to capture pregnancy history. Also allows conditional display of instructions or groups of questions.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            que-7: If the operator is 'exists', the value must be a boolean (operator = 'exists' implies (answer is Boolean))
                            148. Questionnaire.item.enableWhen.id
                            Definition

                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                            ShortUnique id for inter-element referencing
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            150. Questionnaire.item.enableWhen.extension
                            Definition

                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                            ShortAdditional content defined by implementations
                            Comments

                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                            Control0..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            152. Questionnaire.item.enableWhen.modifierExtension
                            Definition

                            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                            ShortExtensions that cannot be ignored even if unrecognized
                            Comments

                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                            Control0..*
                            TypeExtension
                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                            Summarytrue
                            Requirements

                            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                            Alternate Namesextensions, user content, modifiers
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            154. Questionnaire.item.enableWhen.question
                            Definition

                            The linkId for the question whose answer (or lack of answer) governs whether this item is enabled.

                            ShortQuestion that determines whether item is enabled
                            Comments

                            If multiple question occurrences are present for the same question (same linkId), then this refers to the nearest question occurrence reachable by tracing first the "ancestor" axis and then the "preceding" axis and then the "following" axis.

                            Control1..1
                            Typestring
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            156. Questionnaire.item.enableWhen.operator
                            Definition

                            Specifies the criteria by which the question is enabled.

                            Shortexists | = | != | > | < | >= | <=
                            Control1..1
                            BindingThe codes SHALL be taken from QuestionnaireItemOperator
                            (required to http://hl7.org/fhir/ValueSet/questionnaire-enable-operator|4.0.1)

                            The criteria by which a question is enabled.

                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            158. Questionnaire.item.enableWhen.answer[x]
                            Definition

                            A value that the referenced question is tested using the specified operator in order for the item to be enabled.

                            ShortValue for question comparison based on operator
                            Control1..1
                            This element is affected by the following invariants: que-7
                            BindingFor example codes, see QuestionnaireAnswerCodes
                            (example to http://hl7.org/fhir/ValueSet/questionnaire-answers)

                            Allowed values to answer questions.

                            TypeChoice of: boolean, decimal, integer, date, dateTime, time, string, Coding, Quantity, Reference(Resource)
                            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            160. Questionnaire.item.enableBehavior
                            Definition

                            Controls how multiple enableWhen values are interpreted - whether all or any must be true.

                            Shortall | any
                            Comments

                            This element must be specified if more than one enableWhen value is provided.

                            Control0..1
                            This element is affected by the following invariants: que-12
                            BindingThe codes SHALL be taken from EnableWhenBehavior
                            (required to http://hl7.org/fhir/ValueSet/questionnaire-enable-behavior|4.0.1)

                            Controls how multiple enableWhen values are interpreted - whether all or any must be true.

                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            162. Questionnaire.item.enableBehavior.id
                            Definition

                            unique id for the element within a resource (for internal references)

                            Shortxml:id (or equivalent in JSON)
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            164. Questionnaire.item.enableBehavior.extension
                            Definition

                            An Extension

                            ShortExtension
                            Control0..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            SlicingThis element introduces a set of slices on Questionnaire.item.enableBehavior.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ url
                            • 166. Questionnaire.item.enableBehavior.extension:conditionId
                              Slice NameconditionId
                              Definition

                              Id for condition on question.

                              ShortCondition Id
                              Control0..1
                              This element is affected by the following invariants: ele-1
                              TypeExtension(Condition Id) (Extension Type: string)
                              Is Modifierfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              168. Questionnaire.item.enableBehavior.value
                              Definition

                              Primitive value for code

                              ShortPrimitive value for code
                              Control0..1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              170. Questionnaire.item.required
                              Definition

                              An indication, if true, that the item must be present in a "completed" QuestionnaireResponse. If false, the item may be skipped when answering the questionnaire.

                              ShortWhether the item must be included in data results
                              Comments

                              Questionnaire.item.required only has meaning for elements that are conditionally enabled with enableWhen if the condition evaluates to true. If an item that contains other items is marked as required, that does not automatically make the contained elements required (though required groups must contain at least one child element). The value may come from the ElementDefinition referred to by .definition.

                              Control0..1
                              This element is affected by the following invariants: que-6
                              Typeboolean
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Meaning if MissingItems are generally assumed not to be required unless explicitly specified. Systems SHOULD always populate this value
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              172. Questionnaire.item.repeats
                              Definition

                              An indication, if true, that the item may occur multiple times in the response, collecting multiple answers for questions or multiple sets of answers for groups.

                              ShortWhether the item may repeat
                              Comments

                              If a question is marked as repeats=true, then multiple answers can be provided for the question in the corresponding QuestionnaireResponse. When rendering the questionnaire, it is up to the rendering software whether to render the question text for each answer repetition (i.e. "repeat the question") or to simply allow entry/selection of multiple answers for the question (repeat the answers). Which is most appropriate visually may depend on the type of answer as well as whether there are nested items.

                              The resulting QuestionnaireResponse will be populated the same way regardless of rendering - one 'question' item with multiple answer values.

                              The value may come from the ElementDefinition referred to by .definition.

                              Control0..1
                              This element is affected by the following invariants: que-6
                              Typeboolean
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Requirements

                              Items may be used to create set of (related) questions that can be repeated to give multiple answers to such a set.

                              Meaning if MissingItems are generally assumed not to repeat unless explicitly specified. Systems SHOULD always populate this value
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              174. Questionnaire.item.readOnly
                              Definition

                              An indication, when true, that the value cannot be changed by a human respondent to the Questionnaire.

                              ShortDon't allow human editing
                              Comments

                              The value of readOnly elements can be established by asserting extensions for defaultValues, linkages that support pre-population and/or extensions that support calculation based on other answers.

                              Control0..1
                              This element is affected by the following invariants: que-9
                              Typeboolean
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Requirements

                              Allows certain information to be phrased (and rendered) as a question and an answer, while keeping users from changing it. May also be useful for preventing changes to pre-populated portions of a questionnaire, for calculated values, etc.

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              176. Questionnaire.item.maxLength
                              Definition

                              The maximum number of characters that are permitted in the answer to be considered a "valid" QuestionnaireResponse.

                              ShortNo more than this many characters
                              Comments

                              For base64binary, reflects the number of characters representing the encoded data, not the number of bytes of the binary data. The value may come from the ElementDefinition referred to by .definition.

                              Control0..1
                              This element is affected by the following invariants: que-10
                              Typeinteger
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              178. Questionnaire.item.answerValueSet
                              Definition

                              A reference to a value set containing a list of codes representing permitted answers for a "choice" or "open-choice" question.

                              ShortValueset containing permitted answers
                              Comments

                              LOINC defines many useful value sets for questionnaire responses. See LOINC Answer Lists. The value may come from the ElementDefinition referred to by .definition.

                              Control0..1
                              This element is affected by the following invariants: que-4, que-5
                              Typecanonical(ValueSet)
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              180. Questionnaire.item.answerOption
                              Definition

                              One of the permitted answers for a "choice" or "open-choice" question.

                              ShortPermitted answer
                              Comments

                              This element can be used when the value set machinery of answerValueSet is deemed too cumbersome or when there's a need to capture possible answers that are not codes.

                              Control0..*
                              This element is affected by the following invariants: que-4, que-5
                              TypeBackboneElement
                              Is Modifierfalse
                              Summaryfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              182. Questionnaire.item.answerOption.id
                              Definition

                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                              ShortUnique id for inter-element referencing
                              Control0..1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              184. Questionnaire.item.answerOption.extension
                              Definition

                              An Extension

                              ShortExtension
                              Control0..*
                              TypeExtension
                              Is Modifierfalse
                              Summaryfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              SlicingThis element introduces a set of slices on Questionnaire.item.answerOption.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • value @ url
                              • 186. Questionnaire.item.answerOption.extension:ehealth-answeroption-image
                                Slice Nameehealth-answeroption-image
                                Definition

                                Defines the images in the questionnaire answers and questions.

                                ShortThe image for a questionnaire
                                Control0..1
                                This element is affected by the following invariants: ele-1
                                TypeExtension(Questionnaire image) (Complex Extension)
                                Is Modifierfalse
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                188. Questionnaire.item.answerOption.modifierExtension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                ShortExtensions that cannot be ignored even if unrecognized
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                Summarytrue
                                Requirements

                                Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                Alternate Namesextensions, user content, modifiers
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                190. Questionnaire.item.answerOption.value[x]
                                Definition

                                A potential answer that's allowed as the answer to this question.

                                ShortAnswer value
                                Comments

                                The data type of the value must agree with the item.type.

                                Control1..1
                                BindingFor example codes, see QuestionnaireAnswerCodes
                                (example to http://hl7.org/fhir/ValueSet/questionnaire-answers)

                                Allowed values to answer questions.

                                TypeChoice of: integer, date, time, string, Coding, Reference(Resource)
                                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summaryfalse
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                192. Questionnaire.item.answerOption.value[x].id
                                Definition

                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                ShortUnique id for inter-element referencing
                                Control0..1
                                Typestring
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                194. Questionnaire.item.answerOption.value[x].extension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                ShortAdditional content defined by implementations
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                SlicingThis element introduces a set of slices on Questionnaire.item.answerOption.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                • value @ url
                                • 196. Questionnaire.item.answerOption.value[x].extension:xhtml
                                  Slice Namexhtml
                                  Definition

                                  This is an equivalent of the string on which the extension is sent, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                                  ShortString equivalent with html markup
                                  Comments

                                  For questionnaires, see additional guidance and examples in the SDC implementation guide.

                                  Control0..1
                                  TypeExtension(XHTML Representation) (Extension Type: string)
                                  Is Modifierfalse
                                  Summaryfalse
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  198. Questionnaire.item.answerOption.initialSelected
                                  Definition

                                  Indicates whether the answer value is selected when the list of possible answers is initially shown.

                                  ShortWhether option is selected by default
                                  Comments

                                  Use this instead of initial[v] if answerValueSet is present.

                                  Control0..1
                                  Typeboolean
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summaryfalse
                                  Meaning if MissingOnly selected items explicitly marked to be selected
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  200. Questionnaire.item.initial
                                  Definition

                                  One or more values that should be pre-populated in the answer when initially rendering the questionnaire for user input.

                                  ShortInitial value(s) when item is first rendered
                                  Comments

                                  The user is allowed to change the value and override the default (unless marked as read-only). If the user doesn't change the value, then this initial value will be persisted when the QuestionnaireResponse is initially created. Note that initial values can influence results. The data type of initial[x] must agree with the item.type, and only repeating items can have more then one initial value.

                                  Control0..*
                                  This element is affected by the following invariants: que-8, que-13
                                  TypeBackboneElement
                                  Is Modifierfalse
                                  Summaryfalse
                                  Requirements

                                  In some workflows, having defaults saves time.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  202. Questionnaire.item.initial.id
                                  Definition

                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                  ShortUnique id for inter-element referencing
                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  204. Questionnaire.item.initial.extension
                                  Definition

                                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                  ShortAdditional content defined by implementations
                                  Comments

                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                  Control0..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Alternate Namesextensions, user content
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  206. Questionnaire.item.initial.modifierExtension
                                  Definition

                                  May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                  Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                  ShortExtensions that cannot be ignored even if unrecognized
                                  Comments

                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                  Control0..*
                                  TypeExtension
                                  Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                  Summarytrue
                                  Requirements

                                  Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                  Alternate Namesextensions, user content, modifiers
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  208. Questionnaire.item.initial.value[x]
                                  Definition

                                  The actual value to for an initial answer.

                                  ShortActual value for initializing the question
                                  Comments

                                  The type of the initial value must be consistent with the type of the item.

                                  Control1..1
                                  BindingFor example codes, see QuestionnaireAnswerCodes
                                  (example to http://hl7.org/fhir/ValueSet/questionnaire-answers)

                                  Allowed values to answer questions.

                                  TypeChoice of: boolean, decimal, integer, date, dateTime, time, string, uri, Attachment, Coding, Quantity, Reference(Resource)
                                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summaryfalse
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  210. Questionnaire.item.initial.value[x].id
                                  Definition

                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                  ShortUnique id for inter-element referencing
                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  212. Questionnaire.item.initial.value[x].extension
                                  Definition

                                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                  ShortAdditional content defined by implementations
                                  Comments

                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                  Control0..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Alternate Namesextensions, user content
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  SlicingThis element introduces a set of slices on Questionnaire.item.initial.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                  • value @ url
                                  • 214. Questionnaire.item.initial.value[x].extension:xhtml
                                    Slice Namexhtml
                                    Definition

                                    This is an equivalent of the string on which the extension is sent, but includes additional XHTML markup, such as bold, italics, styles, tables, etc. Existing restrictions on XHTML content apply. Note that using markdown allows for greater flexibility of display.

                                    ShortString equivalent with html markup
                                    Comments

                                    For questionnaires, see additional guidance and examples in the SDC implementation guide.

                                    Control0..1
                                    TypeExtension(XHTML Representation) (Extension Type: string)
                                    Is Modifierfalse
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    216. Questionnaire.item.item
                                    Definition

                                    Text, questions and other groups to be nested beneath a question or group.

                                    ShortNested questionnaire items
                                    Comments

                                    There is no specified limit to the depth of nesting. However, Questionnaire authors are encouraged to consider the impact on the user and user interface of overly deep nesting.

                                    Control0..*
                                    This element is affected by the following invariants: que-1
                                    TypeSeettp://hl7.org/fhir/StructureDefinition/Questionnaire#Questionnaire.item
                                    Is Modifierfalse
                                    Summaryfalse
                                    Requirements

                                    Reports can consist of complex nested groups.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))