<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="encounter-reason-use"/><meta><lastUpdated value="2026-04-01T05:55:04.283+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>