<status value="active"/> <date value="2014-03-26"/> <description value="A code that provides additional detail about the means or technique used to ascertain the genetic analysis. Example, PCR, Micro Array"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/v3-ObservationMethod"/> <filter> <property value="concept"/> <op value="is-a"/> <value value="_GeneticObservationMethod"/> </filter> </include> </compose> </ValueSet>