{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The clinical certainty that the reaction was caused by the identified substance is unknown.  It is an explicit assertion that certainty is not known.",
  "system" : "http://terminology.hl7.org/CodeSystem/reaction-event-certainty",
  "property" : [ ],
  "codesystem" : "ddb2f38a-b5df-59a8-b696-e94e881ecdcf",
  "concept_id" : "adfb9215-a80e-5a21-adc9-b6152ed541ca",
  "ancestors" : {
    "unknown" : 0
  },
  "id" : "a5484f3b-6ec5-412a-be8d-f0f6b230fe75",
  "code" : "unknown",
  "display" : "Unknown",
  "version" : "4.0.1"
}