This is the ValueSet that contains all the codes in MedicationDispense Performer Function Codes (http://hl7.org/fhir/ValueSet/medicationdispense-performer-function) and MedicationDispense Performer Function Codes (http://hl7.org/fhir/ValueSet/medicationdispense-performer-function). E.g. what you have to deal with if you get resources containing codes in either of them