{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "A date or partial date (e.g. just year or year + month). There is no time zone. The format is a union of the schema types gYear, gYearMonth and date.  Dates SHALL be valid dates.",
  "system" : "http://hl7.org/fhir/data-types",
  "property" : [ ],
  "codesystem" : "64d60637-8e29-560e-9b01-99cac280eb2d",
  "concept_id" : "904d427a-a632-5721-a1f9-7eb032052cc8",
  "ancestors" : {
    "date" : 0
  },
  "id" : "110a8281-9590-4891-a34d-8219e76cf2a7",
  "code" : "date",
  "display" : "date",
  "version" : "4.0.1"
}