{"resourceType":"CodeSystem","id":"reaction-event-certainty","meta":{"lastUpdated":"2021-01-17T07:06:13.533+11:00"},"url":"http://terminology.hl7.org/CodeSystem/reaction-event-certainty","identifier":[{"system":"urn:ietf:rfc:3986","value":"urn:oid:2.16.840.1.113883.4.642.4.1276"}],"version":"4.0.1","name":"AllergyIntoleranceCertainty","title":"AllergyIntoleranceCertainty","status":"draft","experimental":false,"date":"2021-01-17T07:06:13+11:00","publisher":"HL7 (FHIR Project)","contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"},{"system":"email","value":"fhir@lists.hl7.org"}]}],"description":"Statement about the degree of clinical certainty that a specific substance was the cause of the manifestation in a reaction event.","caseSensitive":true,"valueSet":"http://hl7.org/fhir/ValueSet/reaction-event-certainty","content":"complete","concept":[{"code":"unlikely","display":"Unlikely","definition":"There is a low level of clinical certainty that the reaction was caused by the identified substance."},{"code":"likely","display":"Likely","definition":"There is a high level of clinical certainty that the reaction was caused by the identified substance."},{"code":"confirmed","display":"Confirmed","definition":"There is a very high level of clinical certainty that the reaction was due to the identified substance, which may include clinical evidence by testing or rechallenge."},{"code":"unknown","display":"Unknown","definition":"The clinical certainty that the reaction was caused by the identified substance is unknown.  It is an explicit assertion that certainty is not known."}]}