<status value="active"/> <date value="2014-03-26"/> <description value="Concepts that identify the type or nature of exposure interaction. Examples include "household", "care giver", "intimate partner", "common space", "common substance", etc. to further describe the nature of interaction."/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-ActCode"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="_ActExposureCode"/> </filter> </include> </compose> </ValueSet>