<status value="active"/> <experimental value="false"/> <date value="2014-03-26"/> <description value="A relationship that is based on mutual behavior of the two Entities as being related. The basis of such relationship may be agreements (e.g., spouses, contract parties) or they may be *de facto* behavior (e.g. friends) or may be an incidental involvement with each other (e.g. parties over a dispute, siblings, children)."/> <immutable value="true"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-RoleClass"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="_RoleClassMutualRelationship"/> </filter> </include> <exclude> <system value="http://terminology.hl7.org/CodeSystem/v3-RoleClass"/> <concept> <code value="_RoleClassMutualRelationship"/> </concept> </exclude> </compose> </ValueSet>

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