This is the ValueSet that contains all the codes in ParticipationPhysicalPerformer (http://terminology.hl7.org/ValueSet/v3-ParticipationPhysicalPerformer) and ParticipationPhysicalPerformer (http://terminology.hl7.org/ValueSet/v3-ParticipationPhysicalPerformer). E.g. what you have to deal with if you get resources containing codes in either of them