{"compose":{"include":[{"concept":[{"code":"ms","display":"milliseconds"},{"code":"s","display":"seconds"},{"code":"min","display":"minutes"},{"code":"h","display":"hours"},{"code":"d","display":"days"},{"code":"wk","display":"weeks"},{"code":"mo","display":"months"},{"code":"a","display":"years"}],"system":"http://unitsofmeasure.org"}]},"contact":[{"telecom":[{"system":"url","value":"http://www.hl7.org/Special/committees/fiwg"}]},{"telecom":[{"system":"url","value":"http://hl7.org/fhir"}]}],"copyright":"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.","date":"2026-03-21T18:47:02+00:00","description":"Unified Code for Units of Measure (UCUM). This value set includes all common UCUM codes used for Duration - that it is, all commonly used units which have the same canonical unit as 'a' (year)","experimental":false,"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-wg","valueCode":"fhir"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"normative"}],"id":"duration-units","identifier":[{"system":"urn:ietf:rfc:3986","value":"urn:oid:2.16.840.1.113883.4.642.3.61"}],"jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"meta":{"lastUpdated":"2026-03-21T18:47:02.355+00:00"},"name":"CommonUCUMCodesForDuration","publisher":"HL7 International / FHIR Infrastructure","resourceType":"ValueSet","status":"active","text":{"div":"<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: ValueSet duration-units</b></p><a name=\"duration-units\"> </a><a name=\"hcduration-units\"> </a><ul><li>Include these codes as defined in <a href=\"http://unitsofmeasure.org\"><code>http://unitsofmeasure.org</code></a><span title=\"Version is not explicitly stated. No matching Code System found\"> version Not Stated (use latest from terminology server)</span><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>wk</td><td>weeks</td></tr><tr><td>mo</td><td>months</td></tr><tr><td>a</td><td>years</td></tr></table></li></ul></div>","status":"generated"},"title":"Common UCUM Codes for Duration","url":"http://hl7.org/fhir/ValueSet/duration-units","version":"6.0.0-ballot4"}