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-task - Detailed Descriptions

Active as of 2024-09-02

Definitions for the ehealth-task resource profile.

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

0. Task
2. Task.extension
Control4..?
SlicingThis element introduces a set of slices on Task.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 4. Task.extension:episodeOfCare
    Slice NameepisodeOfCare
    Control1..1
    TypeExtension(EpisodeOfCare) (Extension Type: Reference(ehealth-episodeofcare)referenced)
    6. Task.extension:taskCategory
    Slice NametaskCategory
    Control1..1
    TypeExtension(Task category) (Extension Type: CodeableConcept)
    8. Task.extension:taskResponsible
    Slice NametaskResponsible
    Control1..*
    TypeExtension(Task responsible) (Extension Type: Reference(ehealth-patient, ehealth-practitioner, ehealth-relatedperson, ehealth-careteam))
    10. Task.extension:restrictionCategory
    Slice NamerestrictionCategory
    Control1..*
    TypeExtension(Restriction category) (Extension Type: CodeableConcept)
    12. Task.extension:resolvedTiming
    Slice NameresolvedTiming
    Control0..1
    TypeExtension(Resolved timing) (Complex Extension)
    14. Task.groupIdentifier
    16. Task.groupIdentifier.assigner
    TypeReference(ehealth-organization)referenced
    18. Task.partOf
    TypeReference(ehealth-task)referenced
    20. Task.intent
    Must Supporttrue
    22. Task.priority
    Control1..?
    Must Supporttrue
    24. Task.requester
    TypeReference(ehealth-device, ehealth-organization, ehealth-patient, ehealth-practitioner, ehealth-relatedperson)referenced
    26. Task.owner
    TypeReference(ehealth-organization, ehealth-patient, ehealth-practitioner, ehealth-relatedperson)referenced
    28. Task.note
    30. Task.note.author[x]
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    SlicingThis element introduces a set of slices on Task.note.author[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • type @ $this
    • 32. Task.note.author[x]:authorReference
      Slice NameauthorReference
      Control0..1
      TypeReference(ehealth-practitioner, ehealth-patient, ehealth-relatedperson)
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      34. Task.note.author[x]:authorString
      Slice NameauthorString
      Control0..1
      Typestring
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      36. Task.relevantHistory
      TypeReference(ehealth-provenance)referenced
      38. Task.restriction
      40. Task.restriction.recipient
      TypeReference(ehealth-patient, ehealth-practitioner, ehealth-relatedperson, Group, ehealth-organization)referenced

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

      0. Task
      Definition

      A task to be performed.

      ShortA task to be performed
      Control0..*
      Is Modifierfalse
      Summaryfalse
      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())
      inv-1: Last modified date must be greater than or equal to authored-on date. (lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn)
      inv-1: Last modified date must be greater than or equal to authored-on date. (lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn)
      2. Task.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. Task.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.

      Control40..*
      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 Task.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 6. Task.extension:episodeOfCare
        Slice NameepisodeOfCare
        Definition

        An Extension

        ShortEpisodeOfCare
        Control1..1
        This element is affected by the following invariants: ele-1
        TypeExtension(EpisodeOfCare) (Extension Type: Reference(ehealth-episodeofcare)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())
        8. Task.extension:taskCategory
        Slice NametaskCategory
        Definition

        Category of task.

        ShortCategory of task.
        Control1..1
        This element is affected by the following invariants: ele-1
        TypeExtension(Task category) (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())
        10. Task.extension:taskResponsible
        Slice NametaskResponsible
        Definition

        Individual organization or Device currently responsible for task execution.

        ShortResponsible entity
        Control1..*
        This element is affected by the following invariants: ele-1
        TypeExtension(Task responsible) (Extension Type: Reference(ehealth-patient, ehealth-practitioner, ehealth-relatedperson, ehealth-careteam))
        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. Task.extension:restrictionCategory
        Slice NamerestrictionCategory
        Definition

        The resource is intended for certain category of workflow/responsibility only

        ShortRestriction category
        Control1..*
        This element is affected by the following invariants: ele-1
        TypeExtension(Restriction category) (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())
        14. Task.extension:resolvedTiming
        Slice NameresolvedTiming
        Definition

        Resolved timing reflects whether a measurement (Observation, QuestionnaireResponse or Media) has been performed ad-hoc or as fulfillment of a measurement regime time slot in which case the extent of the time slot is given by start and end. If the measurement regime has a form for which a time slot cannot be resolved or determining is/was not supported, the type unresolved is used.

        ShortResolved Timing
        Control0..1
        This element is affected by the following invariants: ele-1
        TypeExtension(Resolved timing) (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())
        16. Task.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())
        18. Task.partOf
        Definition

        Task that this particular task is part of.

        ShortComposite task
        Comments

        This should usually be 0..1.

        Control0..*
        TypeReference(ehealth-task, Task)referenced
        Is Modifierfalse
        Summarytrue
        Requirements

        Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task).

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

        The current status of the task.

        Shortdraft | requested | received | accepted | +
        Control1..1
        BindingThe codes SHALL be taken from TaskStatushttp://hl7.org/fhir/ValueSet/task-status|4.0.1
        (required to http://hl7.org/fhir/ValueSet/task-status|4.0.1)

        The current status of the task.

        Typecode
        Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Requirements

        These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks.

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

        Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc.

        Shortunknown | proposal | plan | order | original-order | reflex-order | filler-order | instance-order | option
        Comments

        This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances.

        In most cases, Tasks will have an intent of "order".

        Control1..1
        BindingThe codes SHALL be taken from TaskIntenthttp://hl7.org/fhir/ValueSet/task-intent|4.0.1
        (required to http://hl7.org/fhir/ValueSet/task-intent|4.0.1)

        Distinguishes whether the task is a proposal, plan or full order.

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

        Indicates how quickly the Task should be addressed with respect to other requests.

        Shortroutine | urgent | asap | stat
        Control10..1
        BindingThe codes SHALL be taken from RequestPriorityhttp://hl7.org/fhir/ValueSet/request-priority|4.0.1
        (required to http://hl7.org/fhir/ValueSet/request-priority|4.0.1)

        The task's priority.

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

        Used to identify the service level expected while performing a task.

        Meaning if MissingIf missing, this task should be performed with normal priority
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        26. Task.requester
        Definition

        The creator of the task.

        ShortWho is asking for task to be done
        Control0..1
        TypeReference(ehealth-device, ehealth-organization, ehealth-patient, ehealth-practitioner, ehealth-relatedperson, Device, Organization, Patient, Practitioner, PractitionerRole, RelatedPerson)referenced
        Is Modifierfalse
        Summarytrue
        Requirements

        Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task).

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

        Individual organization or Device currently responsible for task execution.

        ShortResponsible individual
        Comments

        Tasks may be created with an owner not yet identified.

        Control0..1
        TypeReference(ehealth-organization, ehealth-patient, ehealth-practitioner, ehealth-relatedperson, Practitioner, PractitionerRole, Organization, CareTeam, HealthcareService, Patient, Device, RelatedPerson)referenced
        Is Modifierfalse
        Summarytrue
        Requirements

        Identifies who is expected to perform this task.

        Alternate NamesPerformer, Executer
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        30. Task.relevantHistory
        Definition

        Links to Provenance records for past versions of this Task that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the task.

        ShortKey events in history of the Task
        Comments

        This element does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The Provenance for the current version can be retrieved with a _revinclude.

        Control0..*
        TypeReference(ehealth-provenance, Provenance)referenced
        Is Modifierfalse
        Summaryfalse
        Alternate NamesStatus History
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

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

        0. Task
        Definition

        A task to be performed.

        ShortA task to be performed
        Control0..*
        Is Modifierfalse
        Summaryfalse
        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())
        inv-1: Last modified date must be greater than or equal to authored-on date. (lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn)
        2. Task.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. Task.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. Task.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. Task.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. Task.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. Task.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. Task.extension
        Definition

        An Extension

        ShortExtension
        Control4..*
        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 Task.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 16. Task.extension:episodeOfCare
          Slice NameepisodeOfCare
          Definition

          An Extension

          ShortEpisodeOfCare
          Control1..1
          This element is affected by the following invariants: ele-1
          TypeExtension(EpisodeOfCare) (Extension Type: Reference(ehealth-episodeofcare)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())
          18. Task.extension:taskCategory
          Slice NametaskCategory
          Definition

          Category of task.

          ShortCategory of task.
          Control1..1
          This element is affected by the following invariants: ele-1
          TypeExtension(Task category) (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())
          20. Task.extension:taskResponsible
          Slice NametaskResponsible
          Definition

          Individual organization or Device currently responsible for task execution.

          ShortResponsible entity
          Control1..*
          This element is affected by the following invariants: ele-1
          TypeExtension(Task responsible) (Extension Type: Reference(ehealth-patient, ehealth-practitioner, ehealth-relatedperson, ehealth-careteam))
          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. Task.extension:restrictionCategory
          Slice NamerestrictionCategory
          Definition

          The resource is intended for certain category of workflow/responsibility only

          ShortRestriction category
          Control1..*
          This element is affected by the following invariants: ele-1
          TypeExtension(Restriction category) (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())
          24. Task.extension:resolvedTiming
          Slice NameresolvedTiming
          Definition

          Resolved timing reflects whether a measurement (Observation, QuestionnaireResponse or Media) has been performed ad-hoc or as fulfillment of a measurement regime time slot in which case the extent of the time slot is given by start and end. If the measurement regime has a form for which a time slot cannot be resolved or determining is/was not supported, the type unresolved is used.

          ShortResolved Timing
          Control0..1
          This element is affected by the following invariants: ele-1
          TypeExtension(Resolved timing) (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())
          26. Task.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())
          28. Task.identifier
          Definition

          The business identifier for this task.

          ShortTask Instance Identifier
          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..*
          TypeIdentifier
          Is Modifierfalse
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          30. Task.instantiatesCanonical
          Definition

          The URL pointing to a FHIR-defined protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Task.

          ShortFormal definition of task
          Control0..1
          Typecanonical(ActivityDefinition)
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          Enables a formal definition of how he task is to be performed, enabling automation.

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

          The URL pointing to an externally maintained protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Task.

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

          Enables a formal definition of how he task is to be performed (e.g. using BPMN, BPEL, XPDL or other formal notation to be associated with a task), enabling automation.

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

          BasedOn refers to a higher-level authorization that triggered the creation of the task. It references a "request" resource such as a ServiceRequest, MedicationRequest, ServiceRequest, CarePlan, etc. which is distinct from the "request" resource the task is seeking to fulfill. This latter resource is referenced by FocusOn. For example, based on a ServiceRequest (= BasedOn), a task is created to fulfill a procedureRequest ( = FocusOn ) to collect a specimen from a patient.

          ShortRequest fulfilled by this task
          Control0..*
          TypeReference(Resource)
          Is Modifierfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          36. Task.groupIdentifier
          Definition

          An identifier that links together multiple tasks and other requests that were created in the same context.

          ShortRequisition or grouper id
          Control0..1
          TypeIdentifier
          Is Modifierfalse
          Summarytrue
          Requirements

          Billing and/or reporting can be linked to whether multiple requests were created as a single unit.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          38. Task.groupIdentifier.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
          40. Task.groupIdentifier.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 Task.groupIdentifier.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 42. Task.groupIdentifier.use
            Definition

            The purpose of this identifier.

            Shortusual | official | temp | secondary | old (If known)
            Comments

            Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

            Control0..1
            BindingThe codes SHALL be taken from IdentifierUse
            (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

            Identifies the purpose for this identifier, if known .

            Typecode
            Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

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

            A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

            ShortDescription of identifier
            Comments

            This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

            Control0..1
            BindingUnless not suitable, these codes SHALL be taken from Identifier Type Codes
            (extensible to http://hl7.org/fhir/ValueSet/identifier-type)

            A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Requirements

            Allows users to make use of identifiers when the identifier system is not known.

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

            Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

            ShortThe namespace for the identifier value
            Comments

            Identifier.system is always case sensitive.

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

            There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

            Example<br/><b>General</b>:http://www.acme.com/identifiers/patient
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            48. Task.groupIdentifier.value
            Definition

            The portion of the identifier typically relevant to the user and which is unique within the context of the system.

            ShortThe value that is unique
            Comments

            If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Example<br/><b>General</b>:123456
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            50. Task.groupIdentifier.period
            Definition

            Time period during which identifier is/was valid for use.

            ShortTime period when id is/was valid for use
            Control0..1
            TypePeriod
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            52. Task.groupIdentifier.assigner
            Definition

            Organization that issued/manages the identifier.

            ShortOrganization that issued id (may be just text)
            Comments

            The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

            Control0..1
            TypeReference(ehealth-organization)referenced
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            54. Task.partOf
            Definition

            Task that this particular task is part of.

            ShortComposite task
            Comments

            This should usually be 0..1.

            Control0..*
            TypeReference(ehealth-task)referenced
            Is Modifierfalse
            Summarytrue
            Requirements

            Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task).

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

            The current status of the task.

            Shortdraft | requested | received | accepted | +
            Control1..1
            BindingThe codes SHALL be taken from TaskStatus
            (required to http://hl7.org/fhir/ValueSet/task-status|4.0.1)

            The current status of the task.

            Typecode
            Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks.

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

            An explanation as to why this task is held, failed, was refused, etc.

            ShortReason for current status
            Comments

            This applies to the current status. Look at the history of the task to see reasons for past statuses.

            Control0..1
            Binding

            Codes to identify the reason for current status. These will typically be specific to a particular workflow.

            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            60. Task.businessStatus
            Definition

            Contains business-specific nuances of the business state.

            ShortE.g. "Specimen collected", "IV prepped"
            Control0..1
            Binding

            The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Requirements

            There's often a need to track substates of a task - this is often variable by specific workflow implementation.

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

            Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc.

            Shortunknown | proposal | plan | order | original-order | reflex-order | filler-order | instance-order | option
            Comments

            This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances.

            In most cases, Tasks will have an intent of "order".

            Control1..1
            BindingThe codes SHALL be taken from TaskIntent
            (required to http://hl7.org/fhir/ValueSet/task-intent|4.0.1)

            Distinguishes whether the task is a proposal, plan or full order.

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

            Indicates how quickly the Task should be addressed with respect to other requests.

            Shortroutine | urgent | asap | stat
            Control1..1
            BindingThe codes SHALL be taken from RequestPriority
            (required to http://hl7.org/fhir/ValueSet/request-priority|4.0.1)

            The task's priority.

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

            Used to identify the service level expected while performing a task.

            Meaning if MissingIf missing, this task should be performed with normal priority
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            66. Task.code
            Definition

            A name or code (or both) briefly describing what the task involves.

            ShortTask Type
            Comments

            The title (eg "My Tasks", "Outstanding Tasks for Patient X") should go into the code.

            Control0..1
            BindingFor example codes, see TaskCode
            (example to http://hl7.org/fhir/ValueSet/task-code)

            Codes to identify what the task involves. These will typically be specific to a particular workflow.

            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            68. Task.description
            Definition

            A free-text description of what is to be performed.

            ShortHuman-readable explanation of task
            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()))
            70. Task.focus
            Definition

            The request being actioned or the resource being manipulated by this task.

            ShortWhat task is acting on
            Comments

            If multiple resources need to be manipulated, use sub-tasks. (This ensures that status can be tracked independently for each referenced resource.).

            Control0..1
            TypeReference(Resource)
            Is Modifierfalse
            Summarytrue
            Requirements

            Used to identify the thing to be done.

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

            The entity who benefits from the performance of the service specified in the task (e.g., the patient).

            ShortBeneficiary of the Task
            Control0..1
            TypeReference(Resource)
            Is Modifierfalse
            Summarytrue
            Requirements

            Used to track tasks outstanding for a beneficiary. Do not use to track the task owner or creator (see owner and creator respectively). This can also affect access control.

            Alternate NamesPatient
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            74. Task.encounter
            Definition

            The healthcare event (e.g. a patient and healthcare provider interaction) during which this task was created.

            ShortHealthcare event during which this task originated
            Control0..1
            TypeReference(Encounter)
            Is Modifierfalse
            Summarytrue
            Requirements

            For some tasks it may be important to know the link between the encounter the task originated within.

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

            Identifies the time action was first taken against the task (start) and/or the time final action was taken against the task prior to marking it as completed (end).

            ShortStart and end time of execution
            Control0..1
            TypePeriod
            Is Modifierfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            78. Task.authoredOn
            Definition

            The date and time this task was created.

            ShortTask Creation Date
            Control0..1
            This element is affected by the following invariants: inv-1
            TypedateTime
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summaryfalse
            Requirements

            Most often used along with lastUpdated to track duration of task to supporting monitoring and management.

            Alternate NamesCreated Date
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            80. Task.lastModified
            Definition

            The date and time of last modification to this task.

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

            Used along with history to track task activity and time in a particular task state. This enables monitoring and management.

            Alternate NamesUpdate Date
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            82. Task.requester
            Definition

            The creator of the task.

            ShortWho is asking for task to be done
            Control0..1
            TypeReference(ehealth-device, ehealth-organization, ehealth-patient, ehealth-practitioner, ehealth-relatedperson)referenced
            Is Modifierfalse
            Summarytrue
            Requirements

            Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task).

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

            The kind of participant that should perform the task.

            ShortRequested performer
            Control0..*
            BindingThe codes SHOULD be taken from ProcedurePerformerRoleCodes
            (preferred to http://hl7.org/fhir/ValueSet/performer-role)

            The type(s) of task performers allowed.

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Requirements

            Use to distinguish tasks on different activity queues.

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

            Individual organization or Device currently responsible for task execution.

            ShortResponsible individual
            Comments

            Tasks may be created with an owner not yet identified.

            Control0..1
            TypeReference(ehealth-organization, ehealth-patient, ehealth-practitioner, ehealth-relatedperson)referenced
            Is Modifierfalse
            Summarytrue
            Requirements

            Identifies who is expected to perform this task.

            Alternate NamesPerformer, Executer
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            88. Task.location
            Definition

            Principal physical location where the this task is performed.

            ShortWhere task occurs
            Control0..1
            TypeReference(Location)
            Is Modifierfalse
            Summarytrue
            Requirements

            Ties the event to where the records are likely kept and provides context around the event occurrence (e.g. if it occurred inside or outside a dedicated healthcare setting).

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

            A description or code indicating why this task needs to be performed.

            ShortWhy task is needed
            Comments

            This should only be included if there is no focus or if it differs from the reason indicated on the focus.

            Control0..1
            Binding

            Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            92. Task.reasonReference
            Definition

            A resource reference indicating why this task needs to be performed.

            ShortWhy task is needed
            Comments

            Tasks might be justified based on an Observation, a Condition, a past or planned procedure, etc. This should only be included if there is no focus or if it differs from the reason indicated on the focus. Use the CodeableConcept text element in Task.reasonCode if the data is free (uncoded) text.

            Control0..1
            TypeReference(Resource)
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            94. Task.insurance
            Definition

            Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be relevant to the Task.

            ShortAssociated insurance coverage
            Control0..*
            TypeReference(Coverage, ClaimResponse)
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            96. Task.note
            Definition

            Free-text information captured about the task as it progresses.

            ShortComments made about the task
            Control0..*
            TypeAnnotation
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            98. Task.note.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
            100. Task.note.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 Task.note.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 102. Task.note.author[x]
              Definition

              The individual responsible for making the annotation.

              ShortIndividual responsible for the annotation
              Comments

              Organization is used when there's no need for specific attribution as to who made the comment.

              Control0..1
              TypeChoice of: Reference(Practitioner, Patient, RelatedPerson, Organization), string
              [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
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on Task.note.author[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
              • type @ $this
              • 104. Task.note.author[x]:authorReference
                Slice NameauthorReference
                Definition

                The individual responsible for making the annotation.

                ShortIndividual responsible for the annotation
                Comments

                Organization is used when there's no need for specific attribution as to who made the comment.

                Control0..1
                TypeReference(ehealth-practitioner, ehealth-patient, ehealth-relatedperson)
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                106. Task.note.author[x]:authorString
                Slice NameauthorString
                Definition

                The individual responsible for making the annotation.

                ShortIndividual responsible for the annotation
                Comments

                Organization is used when there's no need for specific attribution as to who made the comment.

                Control0..1
                Typestring
                [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
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                108. Task.note.time
                Definition

                Indicates when this particular annotation was made.

                ShortWhen the annotation was made
                Control0..1
                TypedateTime
                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()))
                110. Task.note.text
                Definition

                The text of the annotation in markdown format.

                ShortThe annotation - text content (as markdown)
                Control1..1
                Typemarkdown
                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()))
                112. Task.relevantHistory
                Definition

                Links to Provenance records for past versions of this Task that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the task.

                ShortKey events in history of the Task
                Comments

                This element does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The Provenance for the current version can be retrieved with a _revinclude.

                Control0..*
                TypeReference(ehealth-provenance)referenced
                Is Modifierfalse
                Summaryfalse
                Alternate NamesStatus History
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                114. Task.restriction
                Definition

                If the Task.focus is a request resource and the task is seeking fulfillment (i.e. is asking for the request to be actioned), this element identifies any limitations on what parts of the referenced request should be actioned.

                ShortConstraints on fulfillment tasks
                Control0..1
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Requirements

                Sometimes when fulfillment is sought, you don't want full fulfillment.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                116. Task.restriction.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
                118. Task.restriction.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())
                120. Task.restriction.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())
                122. Task.restriction.repetitions
                Definition

                Indicates the number of times the requested action should occur.

                ShortHow many times to repeat
                Control0..1
                TypepositiveInt
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Requirements

                E.g. order that requests monthly lab tests, fulfillment is sought for 1.

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

                Over what time-period is fulfillment sought.

                ShortWhen fulfillment sought
                Comments

                Note that period.high is the due date representing the time by which the task should be completed.

                Control0..1
                TypePeriod
                Is Modifierfalse
                Summaryfalse
                Requirements

                E.g. order that authorizes 1 year's services. Fulfillment is sought for next 3 months.

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

                For requests that are targeted to more than on potential recipient/target, for whom is fulfillment sought?

                ShortFor whom is fulfillment sought?
                Control0..*
                TypeReference(ehealth-patient, ehealth-practitioner, ehealth-relatedperson, Group, ehealth-organization)referenced
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                128. Task.input
                Definition

                Additional information that may be needed in the execution of the task.

                ShortInformation used to perform task
                Control0..*
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Requirements

                Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                Alternate NamesSupporting Information
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                130. Task.input.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
                132. Task.input.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())
                134. Task.input.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())
                136. Task.input.type
                Definition

                A code or description indicating how the input is intended to be used as part of the task execution.

                ShortLabel for the input
                Comments

                If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                Control1..1
                Binding

                Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                TypeCodeableConcept
                Is Modifierfalse
                Summaryfalse
                Requirements

                Inputs are named to enable task automation to bind data and pass it from one task to the next.

                Alternate NamesName
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                138. Task.input.value[x]
                Definition

                The value of the input parameter as a basic type.

                ShortContent to use in performing the task
                Control1..1
                TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
                [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()))
                140. Task.output
                Definition

                Outputs produced by the Task.

                ShortInformation produced as part of task
                Control0..*
                TypeBackboneElement
                Is Modifierfalse
                Summaryfalse
                Requirements

                Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                142. Task.output.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
                144. Task.output.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())
                146. Task.output.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())
                148. Task.output.type
                Definition

                The name of the Output parameter.

                ShortLabel for output
                Control1..1
                Binding

                Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

                TypeCodeableConcept
                Is Modifierfalse
                Summaryfalse
                Requirements

                Outputs are named to enable task automation to bind data and pass it from one task to the next.

                Alternate NamesName
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                150. Task.output.value[x]
                Definition

                The value of the Output parameter as a basic type.

                ShortResult of output
                Control1..1
                TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
                [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
                Requirements

                Task outputs can take any form.

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