<status value="active"/> <date value="2014-03-26"/> <description value="The source act is a single occurrence of a repeatable target act. The source and target act can be in any mood on the "completion track" but the source act must be as far as or further along the track than the target act (i.e., the occurrence of an intent can be an event but not vice versa)."/> <immutable value="true"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-ActRelationshipType"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="OCCR"/> </filter> </include> </compose> </ValueSet>