HL7 v2.7.1 Vocabulary
0.1.0 - ci-build

HL7 v2.7.1 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.v271/ and changes regularly. See the Directory of published versions

CodeSystem: Identity Reliability Code (2.7.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/identityReliability Version: 1.0.0
Active as of 2026-01-27 Computable Name: IdentityReliability
Other Identifiers: OID:2.16.840.1.113883.18.285

Copyright/Legal: HL7 Inc., 2026

Code system of concepts specifying the reliability of patient/person identifying data transmitted via a transaction. Used in HL7 Version 2.x messaging in the PID 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/identityReliability defines the following codes:

CodeDisplayDefinitionversionIntroduced
AL Patient/Person Name is an Alias Patient/Person Name is an Alias 2.4
UA Unknown/Default Address Unknown/Default Address 2.4
UD Unknown/Default Date of Birth Unknown/Default Date of Birth 2.4
US Unknown/Default Social Security Number Unknown/Default Social Security Number 2.4