HL7 Terminology (THO)
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This page is part of the HL7 Terminology (v5.3.0: Release) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: identityReliability

Official URL: http://terminology.hl7.org/CodeSystem/v2-0445 Version: 2.1.0
Active as of 2019-12-01 Responsible: HL7, Inc Computable Name: IdentityReliability
Other Identifiers: id: urn:oid:2.16.840.1.113883.18.285

Copyright/Legal: Copyright HL7. Licensed under creative commons public domain

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.

Underlying Master Code System for V2 table 0445 (Identity Reliability Code)

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


This code system defines the following properties for its concepts

statushttp://terminology.hl7.org/CodeSystem/utg-concept-properties#statuscodeStatus of the concept
deprecatedhttp://terminology.hl7.org/CodeSystem/utg-concept-properties#v2-table-deprecatedcodeVersion of HL7 in which the code was deprecated


This case-sensitive code system http://terminology.hl7.org/CodeSystem/v2-0445 defines the following codes in a Is-A heirarchy:

US Unknown/Default Social Security NumberUnknown/Default Social Security Number
UD Unknown/Default Date of BirthUnknown/Default Date of Birth
UA Unknown/Default AddressUnknown/Default Address
AL Patient/Person Name is an AliasPatient/Person Name is an Alias


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