{
  "package" : "hl7.terminology.r4@6.3.0",
  "definition" : "Threshold Mass Concentration",
  "system" : "http://terminology.hl7.org/CodeSystem/v2-0254",
  "property" : [ {
    "_uri" : "http://terminology.hl7.org/CodeSystem/utg-concept-properties#HL7usageNotes",
    "code" : "HL7usageNotes",
    "valueString" : "Adopted from the IUPAC Silver Book 1995” to the code"
  }, {
    "_uri" : "http://terminology.hl7.org/CodeSystem/utg-concept-properties#status",
    "code" : "status",
    "valueCode" : "A"
  } ],
  "codesystem" : "cc37b4dd-ddde-5296-a07f-538da008dc49",
  "concept_id" : "6b69e762-caf7-513b-bfea-4aa8aa0e0258",
  "ancestors" : {
    "THRMCNC" : 0
  },
  "id" : "24a7510f-4b73-4bb0-a9d2-b9d729a27ea8",
  "code" : "THRMCNC",
  "display" : "Threshold Mass Concentration",
  "version" : "2.0.0"
}