<status value="draft"/> <experimental value="false"/> <date value="2020-02-24T12:41:39+11:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <description value="Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event."/> <immutable value="true"/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/reaction-event-certainty"/> </include> </compose> </ValueSet>