[A person who actually and principally carries out the action. Need not be the principal responsible actor, e.g. a surgery resident operating under supervision of attending surgeon, and may be the patient in self-care, e.g. fingerstick blood sugar. The traditional order filler is a performer. This information should accompany every service event. ( HL7V3.0 )]
UMLS (HL7) C1550480 Relation/PAR: ParticipationType
Relation/CHD: distributor
primary performer
secondary performer