{
  "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" : "bbe07b27-11a3-5083-9993-74295b75d061",
  "ancestors" : {
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  "id" : "1c2f8c49-03df-4673-90d4-b4a6902cf9d1",
  "code" : "1938-0",
  "display" : "Fourfold rise in Legionella pneumophila antibody titer",
  "version" : "2023-04"
}