{
  "package" : "us.nlm.vsac@0.21.0",
  "definition" : null,
  "system" : "https://www.cdc.gov/nhsn/cdaportal/terminology/codesystem/cdcnhsn.html",
  "property" : [ ],
  "codesystem" : "078444ba-7844-5424-a8ae-aaa5dd3908d0",
  "concept_id" : "b3dc9c6d-51cd-5757-93df-011353660275",
  "ancestors" : {
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  "id" : "bbdc69ff-1f58-4e3b-b002-f7c8eea4f6b3",
  "code" : "1333-4",
  "display" : "Number of episodes of mechanical ventilation (EMV) days",
  "version" : "2023-04"
}