HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This is not an authorized publication; it is the continuous build for version 3.1.5). This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

ValueSet: hl7VS-durationCategories

Official URL: http://terminology.hl7.org/ValueSet/v2-0255 Version: 2.0.0
Active as of 2019-12-01 Responsible: HL7, Inc Computable Name: Hl7VSDurationCategories
Other Identifiers: : urn:oid:2.16.840.1.113883.21.162

Copyright/Legal: Copyright HL7. Licensed under creative commons public domain

Value Set of codes that classify an observation definition as intended to measure a patient’s state at a point in time.


This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

Logical Definition (CLD)



This value set contains 27 concepts

Expansion based on durationCategories v2.3.0 (CodeSystem)

All codes in this table are from the system http://terminology.hl7.org/CodeSystem/v2-0255

  *(asterisk) Life of the "unit"(asterisk) Life of the "unit"
  30M30 minutes30 minutes
  1H1 hour1 hour
  2H2 hours2 hours
  2.5H2 1/2 hours2 1/2 hours
  3H3 hours3 hours
  4H4 hours4 hours
  5H5 hours5 hours
  6H6 hours6 hours
  7H7 hours7 hours
  8H8 hours8 hours
  12H12 hours12 hours
  24H24 hours24 hours
  2D2 days2 days
  3D3 days3 days
  4D4 days4 days
  5D5 days5 days
  6D6 days6 days
  1W1 week1 week
  2W2 weeks2 weeks
  3W3 weeks3 weeks
  4W4 weeks4 weeks
  1L1 months (30 days)1 months (30 days)
  2L2 months2 months
  3L3 months3 months
  LULife of the "unit"Life of the "unit" (for blood products).
  PTpoint in timeTo identify measures at a point in time. This is a synonym for "spot" or "random" as applied to urine measurements.

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance)
Display The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code


2020-05-06reviseVocabulary WGTed KleinMigrated to the UTG maintenance environment and publishing tooling.