This is the ValueSet that contains all the codes in EBM Gebührenordnungsposition (https://fhir.cognovis.de/praxis/ValueSet/ebm-gop) and EBM Gebührenordnungsposition (https://fhir.cognovis.de/praxis/ValueSet/ebm-gop). E.g. what you have to deal with if you get resources containing codes in either of them