Definition for Code SystemAllergyIntoleranceCertainty

{
  "resourceType" : "CodeSystem",
  "id" : "reaction-event-certainty",
  "meta" : {
    "lastUpdated" : "2022-09-10T04:52:37.223+10:00",
    "profile" : ["http://hl7.org/fhir/StructureDefinition/shareablecodesystem"]
  },
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>This code system <code>http://hl7.org/fhir/reaction-event-certainty</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">unlikely<a name=\"reaction-event-certainty-unlikely\"> </a></td><td>Unlikely</td><td>There is a low level of clinical certainty that the reaction was caused by the identified substance.</td></tr><tr><td style=\"white-space:nowrap\">likely<a name=\"reaction-event-certainty-likely\"> </a></td><td>Likely</td><td>There is a high level of clinical certainty that the reaction was caused by the identified substance.</td></tr><tr><td style=\"white-space:nowrap\">confirmed<a name=\"reaction-event-certainty-confirmed\"> </a></td><td>Confirmed</td><td>There is a very high level of clinical certainty that the reaction was due to the identified substance, which may include clinical evidence by testing or rechallenge.</td></tr><tr><td style=\"white-space:nowrap\">unknown<a name=\"reaction-event-certainty-unknown\"> </a></td><td>Unknown</td><td>The clinical certainty that the reaction was caused by the identified substance is unknown.  It is an explicit assertion that certainty is not known.</td></tr></table></div>"
  },
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "pc"
  }],
  "url" : "http://hl7.org/fhir/reaction-event-certainty",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.2028"
  }],
  "version" : "5.0.0-ballot",
  "name" : "AllergyIntoleranceCertainty",
  "status" : "draft",
  "experimental" : false,
  "caseSensitive" : true,
  "content" : "complete",
  "concept" : [{
    "code" : "unlikely",
    "display" : "Unlikely",
    "definition" : "There is a low level of clinical certainty that the reaction was caused by the identified substance."
  },
  {
    "code" : "likely",
    "display" : "Likely",
    "definition" : "There is a high level of clinical certainty that the reaction was caused by the identified substance."
  },
  {
    "code" : "confirmed",
    "display" : "Confirmed",
    "definition" : "There is a very high level of clinical certainty that the reaction was due to the identified substance, which may include clinical evidence by testing or rechallenge."
  },
  {
    "code" : "unknown",
    "display" : "Unknown",
    "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."
  }]
}