HL7 v2.8.1 Vocabulary
0.2.0 - ci-build

HL7 v2.8.1 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.v281/ and changes regularly. See the Directory of published versions

## CodeSystem: TQ Conjunction ID (2.8.1 - 1.1.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/tqConjunctionId | Version: 1.1.0
Active as of 2026-03-13 | Computable Name: TqConjunctionId
Other Identifiers: OID:2.16.840.1.113883.18.300, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0472
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts specifying that a second timing specification is to follow using the repeat delimiter. Used in HL7 Version 2.x messaging in the TQ1 segment.

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

- Hl7VStqConjunctionId

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/tqConjunctionId` defines the following codes:

Code | Display | Definition | version introduced | usage
A | Asynchronous | Asynchronous | 2.4 | Do the next specification in parallel with this one (unless otherwise constrained by the following fields: TQ1-7-start date/time and TQ1-8-end date/time). The conjunction of "A" specifies two parallel instructions, as are sometimes used in medication, e.g., prednisone given at 1 tab on Monday, Wednesday, Friday, and at 1/2 tab on Tuesday, Thursday, Saturday, Sunday.
C | Actuation Time | Actuation Time | 2.4 | It will be followed by a completion time for the service. This code allows one to distinguish between the time and priority at which a service should be actuated (e.g., blood should be drawn) and the time and priority at which a service should be complet
S | Synchronous | Synchronous | 2.4 | Do the next specification after this one (unless otherwise constrained by the following fields: TQ1-7-start date/time and TQ1-8-end date/time). An “S” specification implies that the second timing sequence follows the first, e.g., when an order is written to measure blood pressure Q15 minutes for the 1st hour, then every 2 hours for the next day.