This is the ValueSet that contains all the codes in NPUObservationCodesValueSet (http://medcomfhir.dk/ig/terminology/ValueSet/npu-observation-codes-valueset) and NPUObservationCodesValueSet (http://medcomfhir.dk/ig/terminology/ValueSet/npu-observation-codes-valueset). E.g. what you have to deal with if you get resources containing codes in either of them