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

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="event-timing"/>
  <meta>
    <lastUpdated value="2026-04-01T17:59:15.240+00:00"/>
  </meta>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p class="res-header-id">
        <b>Generated Narrative: CodeSystem event-timing</b>
      </p>
      <a name="event-timing"> </a>
      <a name="hcevent-timing"> </a>
      <p>This case-sensitive code system 
        <code>http://hl7.org/fhir/event-timing</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">MORN
            <a name="event-timing-MORN"> </a>
          </td>
          <td>Morning</td>
          <td>Event occurs during the morning. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">MORN.early
            <a name="event-timing-MORN.46early"> </a>
          </td>
          <td>Early Morning</td>
          <td>Event occurs during the early morning. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">MORN.late
            <a name="event-timing-MORN.46late"> </a>
          </td>
          <td>Late Morning</td>
          <td>Event occurs during the late morning. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">NOON
            <a name="event-timing-NOON"> </a>
          </td>
          <td>Noon</td>
          <td>Event occurs around 12:00pm. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">AFT
            <a name="event-timing-AFT"> </a>
          </td>
          <td>Afternoon</td>
          <td>Event occurs during the afternoon. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">AFT.early
            <a name="event-timing-AFT.46early"> </a>
          </td>
          <td>Early Afternoon</td>
          <td>Event occurs during the early afternoon. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">AFT.late
            <a name="event-timing-AFT.46late"> </a>
          </td>
          <td>Late Afternoon</td>
          <td>Event occurs during the late afternoon. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">EVE
            <a name="event-timing-EVE"> </a>
          </td>
          <td>Evening</td>
          <td>Event occurs during the evening. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">EVE.early
            <a name="event-timing-EVE.46early"> </a>
          </td>
          <td>Early Evening</td>
          <td>Event occurs during the early evening. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">EVE.late
            <a name="event-timing-EVE.46late"> </a>
          </td>
          <td>Late Evening</td>
          <td>Event occurs during the late evening. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">NIGHT
            <a name="event-timing-NIGHT"> </a>
          </td>
          <td>Night</td>
          <td>Event occurs during the night. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">PHS
            <a name="event-timing-PHS"> </a>
          </td>
          <td>After Sleep</td>
          <td>Event occurs [offset] after subject goes to sleep. The exact time is unspecified and established by institution convention or patient interpretation.</td>
        </tr>
        <tr>
          <td style="white-space:nowrap">IMD
            <a name="event-timing-IMD"> </a>
          </td>
          <td>Immediate</td>
          <td>Event occurs a single time (with no repetitions) as soon as possible after the scheduled or actual start of the overall event.</td>
        </tr>
      </table>
    </div>
  </text>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="normative"/>
  </extension>
  <url value="http://hl7.org/fhir/event-timing"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.1.76"/>
  </identifier>
  <version value="6.0.0-ballot4"/>
  <name value="EventTiming"/>
  <title value="EventTiming"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2026-04-01T17:59:15+00:00"/>
  <publisher value="HL7 International / FHIR Infrastructure"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="fhir@lists.hl7.org"/>
    </telecom>
  </contact>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/fiwg"/>
    </telecom>
  </contact>
  <description value="Real-world event relating to the schedule."/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
      <display value="World"/>
    </coding>
  </jurisdiction>
  <caseSensitive value="true"/>
  <content value="complete"/>
  <concept>
    <code value="MORN"/>
    <display value="Morning"/>
    <definition value="Event occurs during the morning. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="MORN.early"/>
    <display value="Early Morning"/>
    <definition value="Event occurs during the early morning. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="MORN.late"/>
    <display value="Late Morning"/>
    <definition value="Event occurs during the late morning. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="NOON"/>
    <display value="Noon"/>
    <definition value="Event occurs around 12:00pm. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="AFT"/>
    <display value="Afternoon"/>
    <definition value="Event occurs during the afternoon. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="AFT.early"/>
    <display value="Early Afternoon"/>
    <definition value="Event occurs during the early afternoon. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="AFT.late"/>
    <display value="Late Afternoon"/>
    <definition value="Event occurs during the late afternoon. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="EVE"/>
    <display value="Evening"/>
    <definition value="Event occurs during the evening. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="EVE.early"/>
    <display value="Early Evening"/>
    <definition value="Event occurs during the early evening. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="EVE.late"/>
    <display value="Late Evening"/>
    <definition value="Event occurs during the late evening. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="NIGHT"/>
    <display value="Night"/>
    <definition value="Event occurs during the night. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="PHS"/>
    <display value="After Sleep"/>
    <definition value="Event occurs [offset] after subject goes to sleep. The exact time is unspecified and established by institution convention or patient interpretation."/>
  </concept>
  <concept>
    <code value="IMD"/>
    <display value="Immediate"/>
    <definition value="Event occurs a single time (with no repetitions) as soon as possible after the scheduled or actual start of the overall event."/>
  </concept>
</CodeSystem>