{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : null,
  "system" : "http://terminology.hl7.org/CodeSystem/v2-0544",
  "property" : [ ],
  "codesystem" : "0dfa3507-5842-559f-a837-8ef7668b075e",
  "concept_id" : "c91a6c72-6a97-5d5a-a090-33e887156b89",
  "ancestors" : {
    "XCREF" : 0
  },
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
    "valueString" : "Failed to keep critical refrigerated."
  } ],
  "id" : "0bbadee2-a43b-4947-8a52-c4491e30a8a9",
  "code" : "XCREF",
  "display" : "Not Critical refrigerated temperature",
  "version" : "2.9"
}