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

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="encounter-reason-use"/>
  <meta>
    <lastUpdated value="2026-04-02T04:59:15.240+11:00"/>
  </meta>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p class="res-header-id">
        <b>Generated Narrative: CodeSystem encounter-reason-use</b>
      </p>
      <a name="encounter-reason-use"> </a>
      <a name="hcencounter-reason-use"> </a>
      <div style="display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%">
        <p style="margin-bottom: 0px">Last updated: 2021-01-05T10:01:24.148+11:00</p>
      </div>
      <p>This case-sensitive code system 
        <code>http://hl7.org/fhir/encounter-reason-use</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">CC
            <a name="encounter-reason-use-CC"> </a>
          </td>
          <td>Chief Complaint</td>
          <td>Patient's stated reason for seeking care.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">HC
            <a name="encounter-reason-use-HC"> </a>
          </td>
          <td>Health Concern</td>
          <td>An identified issue, risk, or concern requiring monitoring or management.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">AD
            <a name="encounter-reason-use-AD"> </a>
          </td>
          <td>Admitting Diagnosis</td>
          <td>Diagnosis (often provisional) documented as the reason for admission to the facility.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">RV
            <a name="encounter-reason-use-RV"> </a>
          </td>
          <td>Reason for Visit</td>
          <td>Provider-recognized reason for the encounter (may differ from chief complaint).</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">HM
            <a name="encounter-reason-use-HM"> </a>
          </td>
          <td>Health Maintenance (including screening)</td>
          <td>Preventive or routine services (e.g., screening, immunization) performed to maintain health.</td>
        </tr>
      </table>
    </div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="pa"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="informative"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="0"/>
  </extension>
  <url value="http://hl7.org/fhir/encounter-reason-use"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.2114"/>
  </identifier>
  <version value="6.0.0-ballot4"/>
  <name value="EncounterReasonUse"/>
  <title value="Encounter Reason Use"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2021-01-05T10:01:24+11:00"/>
  <publisher value="HL7 (FHIR Project)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="fhir@lists.hl7.org"/>
    </telecom>
  </contact>
  <description value="Encounter Reason Use"/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
      <display value="World"/>
    </coding>
  </jurisdiction>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/encounter-reason-use"/>
  <content value="complete"/>
  <concept>
    <code value="CC"/>
    <display value="Chief Complaint"/>
    <definition value="Patient's stated reason for seeking care."/>
  </concept>
  <concept>
    <code value="HC"/>
    <display value="Health Concern"/>
    <definition value="An identified issue, risk, or concern requiring monitoring or management."/>
  </concept>
  <concept>
    <code value="AD"/>
    <display value="Admitting Diagnosis"/>
    <definition value="Diagnosis (often provisional) documented as the reason for admission to the facility."/>
  </concept>
  <concept>
    <code value="RV"/>
    <display value="Reason for Visit"/>
    <definition value="Provider-recognized reason for the encounter (may differ from chief complaint)."/>
  </concept>
  <concept>
    <code value="HM"/>
    <display value="Health Maintenance (including screening)"/>
    <definition value="Preventive or routine services (e.g., screening, immunization) performed to maintain health."/>
  </concept>
</CodeSystem>