This is the ValueSet that contains all the codes in Z-diagnoser (treatment area) (http://ehealth.sundhed.dk/vs/ehealth-treatment-area-xc-3) and Z-diagnoser (treatment area) (http://ehealth.sundhed.dk/vs/ehealth-treatment-area-xc-3). E.g. what you have to deal with if you get resources containing codes in either of them