This is the ValueSet that contains all the codes in Document Class & Type waardelijst (http://fhir.hl7.nl/zorgviewer/ValueSet/DocumentLOINCCodelist) and Document Class & Type waardelijst (http://fhir.hl7.nl/zorgviewer/ValueSet/DocumentLOINCCodelist). E.g. what you have to deal with if you get resources containing codes in either of them