HL7 v2.5.1 Vocabulary
0.1.0 - ci-build

HL7 v2.5.1 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.v251/ and changes regularly. See the Directory of published versions

## CodeSystem: Appointment Reason Codes (2.5.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/appointmentReason | Version: 1.0.0
Active as of 2026-01-27 | Computable Name: AppointmentReason
Other Identifiers: OID:2.16.840.1.113883.18.169
Copyright/Legal: HL7 Inc., 2026

Code system of concepts used to describe the kind of appointment or the reason why an appointment has been scheduled. Used in HL7 Version 2.x messaging in the ARQ segment.

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

- Hl7VSappointmentReasonCodes

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
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/appointmentReason` defines the following codes:

Code | Display | Definition | versionIntroduced
CHECKUP | A routine check-up, such as an annual physical | A routine check-up, such as an annual physical | 2.3
EMERGENCY | Emergency appointment | Emergency appointment | 2.3
FOLLOWUP | A follow up visit from a previous appointment | A follow up visit from a previous appointment | 2.3
ROUTINE | Routine appointment - default if not valued | Routine appointment - default if not valued | 2.3
WALKIN | A previously unscheduled walk-in visit | A previously unscheduled walk-in visit | 2.3