{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : null,
  "system" : "http://terminology.hl7.org/CodeSystem/v2-0919",
  "property" : [ ],
  "codesystem" : "53d1cf95-4505-53cd-81f3-bb6ef90966e5",
  "concept_id" : "730d284d-b2b2-5fdd-b805-52b8da774a65",
  "ancestors" : {
    "D" : 0
  },
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
    "valueString" : "When  D is specified for this field, using field OM1-49 determines how tests must be grouped together.  Tests within the same Diagnostic Service Sector may be on the same requisition, and therefore in the same message"
  } ],
  "id" : "0be08c31-e57a-46c3-a612-29c2946adcaf",
  "code" : "D",
  "display" : "In some cases, this test should be only exclusively with like tests (examples are cyto or pathology)",
  "version" : "2.9"
}