HL7 v2.9.1 Vocabulary
0.2.0 - ci-build

HL7 v2.9.1 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 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.v291/ and changes regularly. See the Directory of published versions

## CodeSystem: Time Delay Post Challenge (2.9.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/timeDelayPostChallenge | Version: 1.0.0
Active as of 2026-03-13 | Computable Name: TimeDelayPostChallenge
Other Identifiers: OID:2.16.840.1.113883.18.151, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0256
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts used to classify an observation definition as being a component of a challenge test. 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:

- Hl7VStimeDelayPostChallenge

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
version introduced | versionIntroduced | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced | string | version when was this code introduced
version deprecated | 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, to suppress IG-publisher warning, to be replaced with standard later | 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/timeDelayPostChallenge` defines the following codes:

Code | Display | Definition | version introduced | modified
10D | 10 days | 10 days | 2.3 | 2015-07-13
10M | 10 minutes post challenge | 10 minutes post challenge | 2.3 | 2015-07-13
12H | 12 hours post challenge | 12 hours post challenge | 2.3 | 2015-07-13
15M | 15 minutes post challenge | 15 minutes post challenge | 2.3 | 2015-07-13
1H | 1 hour post challenge | 1 hour post challenge | 2.3 | 2015-07-13
1L | 1 month (30 days) post challenge | 1 month (30 days) post challenge | 2.3 | 2015-07-13
1M | 1 minute post challenge | 1 minute post challenge | 2.3 | 2015-07-13
1W | 1 week | 1 week | 2.3 | 2015-07-13
2.5H | 2 1/2 hours post challenge | 2 1/2 hours post challenge | 2.3 | 2015-07-13
20M | 20 minutes post challenge | 20 minutes post challenge | 2.3 | 2015-07-13
24H | 24 hours post challenge | 24 hours post challenge | 2.3 | 2015-07-13
25M | 25 minutes post challenge | 25 minutes post challenge | 2.3 | 2015-07-13
2D | 2 days | 2 days | 2.3 | 2015-07-13
2H | 2 hours post challenge | 2 hours post challenge | 2.3 | 2015-07-13
2L | 2 months (60 days) post challenge | 2 months (60 days) post challenge | 2.3 | 2015-07-13
2M | 2 minutes post challenge | 2 minutes post challenge | 2.3 | 2015-07-13
2W | 2 weeks | 2 weeks | 2.3 | 2015-07-13
30M | 30 minutes post challenge | 30 minutes post challenge | 2.3 | 2015-07-13
3D | 3 days | 3 days | 2.3 | 2015-07-13
3H | 3 hours post challenge | 3 hours post challenge | 2.3 | 2015-07-13
3L | 3 months (90 days) post challenge | 3 months (90 days) post challenge | 2.3 | 2015-07-13
3M | 3 minutes post challenge | 3 minutes post challenge | 2.3 | 2015-07-13
3W | 3 weeks | 3 weeks | 2.3 | 2015-07-13
4D | 4 days | 4 days | 2.3 | 2015-07-13
4H | 4 hours post challenge | 4 hours post challenge | 2.3 | 2015-07-13
4M | 4 minutes post challenge | 4 minutes post challenge | 2.3 | 2015-07-13
4W | 4 weeks | 4 weeks | 2.3 | 2015-07-13
5D | 5 days | 5 days | 2.3 | 2015-07-13
5H | 5 hours post challenge | 5 hours post challenge | 2.3 | 2015-07-13
5M | 5 minutes post challenge | 5 minutes post challenge | 2.3 | 2015-07-13
6D | 6 days | 6 days | 2.3 | 2015-07-13
6H | 6 hours post challenge | 6 hours post challenge | 2.3 | 2015-07-13
6M | 6 minutes post challenge | 6 minutes post challenge | 2.3 | 2015-07-13
7D | 7 days | 7 days | 2.3 | 2015-07-13
7H | 7 hours post challenge | 7 hours post challenge | 2.3 | 2015-07-13
7M | 7 minutes post challenge | 7 minutes post challenge | 2.3 | 2015-07-13
8H | 8 hours post challenge | 8 hours post challenge | 2.3 | 2015-07-13
8H SHIFT | 8 hours aligned on nursing shifts | 8 hours aligned on nursing shifts | 2.3 | 2015-07-13
8M | 8 minutes post challenge | 8 minutes post challenge | 2.3 | 2015-07-13
9M | 9 minutes post challenge | 9 minutes post challenge | 2.3 | 2015-07-13
BS | Baseline (time just before the challenge) | Baseline (time just before the challenge) | 2.3 | 2015-07-13
PEAK | The time post drug dose at which the highest drug level is reached (differs by drug) | The time post drug dose at which the highest drug level is reached (differs by drug) | 2.3 | 2015-07-13
RANDOM | Time from the challenge, or dose not specified. (random) | Time from the challenge, or dose not specified. (random) | 2.3 | 2015-07-13
TROUGH | The time post drug dose at which the lowest drug level is reached (varies with drug) | The time post drug dose at which the lowest drug level is reached (varies with drug) | 2.3 | 2015-07-13