HL7 v2.8 Vocabulary
0.1.0 - ci-build

HL7 v2.8 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v28/ and changes regularly. See the Directory of published versions

CodeSystem: Duration Categories (2.8 - 1.1.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/durationCategories Version: 1.1.0
Active as of 2026-01-27 Computable Name: DurationCategories
Other Identifiers: OID:2.16.840.1.113883.18.150

Copyright/Legal: HL7 Inc., 2026

Code system of concepts used to classify an observation definition as intended to measure a patient's state at a point in time. Used in HL7 Version 2.x messaging in the OM1 segment.

This Code system is referenced in the content logical definition of the following value sets:

Properties

This code system defines the following properties for its concepts

NameCodeURITypeDescription
versionIntroduced versionIntroduced http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced string version when was this code introduced
versionDeprecated versionDeprecated http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated string version when was this code deprecated
status status http://hl7.org/fhir/concept-properties#status code A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired
comment comment http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment string A string that provides additional detail pertinent to the use or understanding of the concept
usage usage http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage string usage notes for this code
modified modified http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified dateTime date of last modification

Concepts

This case-sensitive code system http://terminology.hl7.org/v2plusvocab/CodeSystem/durationCategories defines the following codes:

CodeDisplayDefinitionversionIntroducedcomment
* (asterisk) Life of the "unit" (asterisk) Life of the "unit" 2.3 Used for blood products.
12H 12 hours 12 hours 2.3
1H 1 hour 1 hour 2.3
1L 1 months (30 days) 1 months (30 days) 2.3
1W 1 week 1 week 2.3
2.5H 2 1/2 hours 2 1/2 hours 2.3
24H 24 hours 24 hours 2.3
2D 2 days 2 days 2.3
2H 2 hours 2 hours 2.3
2L 2 months 2 months 2.3
2W 2 weeks 2 weeks 2.3
30M 30 minutes 30 minutes 2.3
3D 3 days 3 days 2.3
3H 3 hours 3 hours 2.3
3L 3 months 3 months 2.3
3W 3 weeks 3 weeks 2.3
4D 4 days 4 days 2.3
4H 4 hours 4 hours 2.3
4W 4 weeks 4 weeks 2.3
5D 5 days 5 days 2.3
5H 5 hours 5 hours 2.3
6D 6 days 6 days 2.3
6H 6 hours 6 hours 2.3
7H 7 hours 7 hours 2.3
8H 8 hours 8 hours 2.3
PT point in time To identify measures at a point in time. 2.3 This is a synonym for "spot" or "random" as applied to urine measurements.