FHIR Extensions Pack
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This page is part of the FHIR Core Extensions Registry (v5.3.0-ballot-tc1: Release 5.3) based on FHIR (HL7® FHIR® Standard) v5.0.0. This version is a pre-release. The current official version is 5.2.0. For a full list of available versions, see the Directory of published versions

: Common UCUM Codes for Time Duration - XML Representation

Page standards status: Trial-use Maturity Level: 1

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<ValueSet xmlns="http://hl7.org/fhir">
  <id value="time-duration-units"/>
  <meta>
    <profile
             value="http://hl7.org/fhir/StructureDefinition/shareablevalueset"/>
  </meta>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: ValueSet time-duration-units</b></p><a name="time-duration-units"> </a><a name="hctime-duration-units"> </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"/><p style="margin-bottom: 0px">Profile: <a href="http://hl7.org/fhir/R5/shareablevalueset.html">Shareable ValueSet</a></p></div><ul><li>Include these codes as defined in <a href="http://unitsofmeasure.org"><code>http://unitsofmeasure.org</code></a><table class="none"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td></tr><tr><td>ms</td><td>milliseconds</td></tr><tr><td>s</td><td>seconds</td></tr><tr><td>min</td><td>minutes</td></tr><tr><td>h</td><td>hours</td></tr><tr><td>d</td><td>days</td></tr><tr><td>mo</td><td>months</td></tr><tr><td>a</td><td>years</td></tr></table></li></ul></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="trial-use"/>
  </extension>
  <extension
             url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1"/>
  </extension>
  <url value="http://hl7.org/fhir/ValueSet/time-duration-units"/>
  <version value="5.3.0-ballot-tc1"/>
  <name value="CommonUCUMCodesForTimeDuration"/>
  <title value="Common UCUM Codes for Time Duration"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2025-05-23"/>
  <publisher value="HL7 International / FHIR Infrastructure"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/fiwg"/>
    </telecom>
  </contact>
  <description
               value="This value set includes all common UCUM codes used for Time Duration Units - 'a' (years), 'mo' (months), 'd' (days), 'h' (hours), 'min' (minutes), 's' (seconds), and 'ms' (milliseconds). NOTE: This value set is the same as the duration units value set, except that it does not include weeks, because weeks are not a valid precision for a datetime, time, or instant value."/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
    </coding>
  </jurisdiction>
  <copyright
             value="The UCUM codes, UCUM table (regardless of format), and UCUM Specification are copyright © 1999-2009, Regenstrief Institute, Inc. and the Unified Codes for Units of Measures (UCUM) Organization. All rights reserved."/>
  <compose>
    <include>
      <system value="http://unitsofmeasure.org"/>
      <concept>
        <code value="ms"/>
        <display value="milliseconds"/>
      </concept>
      <concept>
        <code value="s"/>
        <display value="seconds"/>
      </concept>
      <concept>
        <code value="min"/>
        <display value="minutes"/>
      </concept>
      <concept>
        <code value="h"/>
        <display value="hours"/>
      </concept>
      <concept>
        <code value="d"/>
        <display value="days"/>
      </concept>
      <concept>
        <code value="mo"/>
        <display value="months"/>
      </concept>
      <concept>
        <code value="a"/>
        <display value="years"/>
      </concept>
    </include>
  </compose>
</ValueSet>