{
  "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" : "3e695fc4-15d1-5b67-b090-2566512134ec",
  "ancestors" : {
    "2121-2" : 0
  },
  "id" : "68d1d3fd-dcde-4e41-b781-ed66c2e0f19f",
  "code" : "2121-2",
  "display" : "Heart transplant",
  "version" : "2023-04"
}