Definition for Code SystemAllergyIntoleranceCertainty

<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="reaction-event-certainty"/> 
  <meta> 
    <lastUpdated value="2022-09-07T10:58:29.429+10:00"/> 
    <profile value="http://hl7.org/fhir/StructureDefinition/shareablecodesystem"/> 
  </meta> 
  <text> 
    <status value="generated"/> 
    <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> 
  </text> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="pc"/> 
  </extension> 
  <url value="http://hl7.org/fhir/reaction-event-certainty"/> 
  <identifier> 
    <system value="urn:ietf:rfc:3986"/> 
    <value value="urn:oid:2.16.840.1.113883.4.642.4.2028"/> 
  </identifier> 
  <version value="5.0.0-ballot"/> 
  <name value="AllergyIntoleranceCertainty"/> 
  <status value="draft"/> 
  <experimental value="false"/> 
  <caseSensitive value="true"/> 
  <content value="complete"/> 
  <concept> 
    <code value="unlikely"/> 
    <display value="Unlikely"/> 
    <definition value="There is a low level of clinical certainty that the reaction was caused by the identified
     substance."/> 
  </concept> 
  <concept> 
    <code value="likely"/> 
    <display value="Likely"/> 
    <definition value="There is a high level of clinical certainty that the reaction was caused by the identified
     substance."/> 
  </concept> 
  <concept> 
    <code value="confirmed"/> 
    <display value="Confirmed"/> 
    <definition value="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."/> 
  </concept> 
  <concept> 
    <code value="unknown"/> 
    <display value="Unknown"/> 
    <definition value="The clinical certainty that the reaction was caused by the identified substance is unknown.
      It is an explicit assertion that certainty is not known."/> 
  </concept> 
</CodeSystem>