This is the ValueSet that contains all the codes in BillingPattern Stopfield Type (https://fhir.cognovis.de/praxis/ValueSet/billing-pattern-stopfield-type) and BillingPattern Stopfield Type (https://fhir.cognovis.de/praxis/ValueSet/billing-pattern-stopfield-type). E.g. what you have to deal with if you get resources containing codes in either of them