This is the ValueSet that contains all the codes in DK Core LOINC Basic Observations (http://hl7.dk/fhir/core/ValueSet/dk-core-LoincBasicObservation) and DK Core LOINC Basic Observations (http://hl7.dk/fhir/core/ValueSet/dk-core-LoincBasicObservation). E.g. what you have to deal with if you get resources containing codes in either of them