{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : null,
  "system" : "http://terminology.hl7.org/CodeSystem/v2-0508",
  "property" : [ ],
  "codesystem" : "c2f8ab40-78a9-5303-8a3e-acc2d5d81b8a",
  "concept_id" : "80515437-ecac-5ef0-abd7-3ca3d271efc9",
  "ancestors" : {
    "CM" : 0
  },
  "id" : "fe3b6206-ec06-4b12-bd72-6c0db7886e1e",
  "code" : "CM",
  "display" : "CMV Negative",
  "version" : "2.9"
}