<status value="active"/> <experimental value="false"/> <date value="2014-03-26"/> <description value="A person who verifies the correctness and appropriateness of the service (plan, order, event, etc.) and hence takes on accountability."/> <immutable value="true"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-ParticipationType"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="VRF"/> </filter> </include> </compose> </ValueSet>