<status value="active"/> <date value="2014-03-26"/> <description value="Identifies the specific hierarchical relationship between the playing and scoping medications. *Examples:* Generic, Generic Formulation, Therapeutic Class, etc."/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-RoleCode"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="_MedicationGeneralizationRoleType"/> </filter> </include> </compose> </ValueSet>