HL7 Terminology
2.0.0 - Publication

This page is part of the HL7 Terminology (v2.0.0: Release) based on FHIR R4. The current version which supercedes this version is 5.2.0. For a full list of available versions, see the Directory of published versions

CodeSystem: timeDelayPostChallenge


Defining URL:http://terminology.hl7.org/CodeSystem/v2-0256
Status:Active as of 2019-12-01

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.

Publisher:HL7, Inc
Committee:Infrastructure And Messaging

Copyright HL7. Licensed under creative commons public domain

Content:Complete: All the concepts defined by the code system are included in the code system resource
OID:2.16.840.1.113883.18.151 (for OID based terminology systems)
Value Set:http://terminology.hl7.org/ValueSet/v2-0256 ( is the value set for all codes in this code system)
Source Resource:XML / JSON / Turtle

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


statushttp://terminology.hl7.org/CodeSystem/utg-concept-properties#statusStatus of the conceptcode
deprecatedhttp://terminology.hl7.org/CodeSystem/utg-concept-properties#v2-table-deprecatedVersion of HL7 in which the code was deprecatedcode

This code system http://terminology.hl7.org/CodeSystem/v2-0256 defines the following codes:

BS Baseline (time just before the challenge)Baseline (time just before the challenge)
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)
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)
RANDOM Time from the challenge, or dose not specified. (random)Time from the challenge, or dose not specified. (random)
1M 1 minute post challenge1 minute post challenge
2M 2 minutes post challenge2 minutes post challenge
3M 3 minutes post challenge3 minutes post challenge
4M 4 minutes post challenge4 minutes post challenge
5M 5 minutes post challenge5 minutes post challenge
6M 6 minutes post challenge6 minutes post challenge
7M 7 minutes post challenge7 minutes post challenge
8M 8 minutes post challenge8 minutes post challenge
9M 9 minutes post challenge9 minutes post challenge
10M 10 minutes post challenge10 minutes post challenge
15M 15 minutes post challenge15 minutes post challenge
20M 20 minutes post challenge20 minutes post challenge
25M 25 minutes post challenge25 minutes post challenge
30M 30 minutes post challenge30 minutes post challenge
1H 1 hour post challenge1 hour post challenge
2H 2 hours post challenge2 hours post challenge
2.5H 2 1/2 hours post challenge2 1/2 hours post challenge
3H 3 hours post challenge3 hours post challenge
4H 4 hours post challenge4 hours post challenge
5H 5 hours post challenge5 hours post challenge
6H 6 hours post challenge6 hours post challenge
7H 7 hours post challenge7 hours post challenge
8H 8 hours post challenge8 hours post challenge
8H SHIFT 8 hours aligned on nursing shifts8 hours aligned on nursing shifts
12H 12 hours post challenge12 hours post challenge
24H 24 hours post challenge24 hours post challenge
2D 2 days2 days
3D 3 days3 days
4D 4 days4 days
5D 5 days5 days
6D 6 days6 days
7D 7 days7 days
1W 1 week1 week
10D 10 days10 days
2W 2 weeks2 weeks
3W 3 weeks3 weeks
4W 4 weeks4 weeks
1L 1 month (30 days) post challenge1 month (30 days) post challenge
2L 2 months (60 days) post challenge2 months (60 days) post challenge
3L 3 months (90 days) post challenge3 months (90 days) post challenge


2020-05-06reviseTed KleinVocabulary WGMigrated to the UTG maintenance environment and publishing tooling.