HL7 Terminology (THO)
7.0.0 - publication
This page is part of the HL7 Terminology (v7.0.0: Release) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version. For a full list of available versions, see the Directory of published versions
| Official URL: http://terminology.hl7.org/NamingSystem/iri | Version: 1.0.0 | |||
| Active as of 2023-03-16 | Computable Name: IRI | |||
As defined by RFC 3987 (http://www.ietf.org/rfc/rfc3987.txt). Internationalized Resource Identifiers (IRIs) are the internationalized version of URIs (which are also defined as a NamingSystem as https://terminology.hl7.org/4.0.0/NamingSystem-uri.html) that allow Unicode characters to be used in the identifier with some restrictions, which was defined by the Internet Engineering Task Force (IETF) in 2005. An IRI such as 'https://hi.wikipedia.org/wiki/हृदय' can be percent-encoded into the URI 'https://hi.wikipedia.org/wiki/%E0%A4%B9%E0%A5%83%E0%A4%A6%E0%A4%AF' to be used as a URL, but the IRI is easier to read, particularly for readers of non-Latin languages, and is natively supported by many tools, including many browsers, HTTP libraries, and in the Resource Description Framework (RDF). IRI values SHALL NOT be used in Identifier.system or Coding.system. They SHALL only be used in Identifier.value (where Identifier.system = urn:ietf:rfc:3987).
| Defining URL | http://terminology.hl7.org/NamingSystem/iri |
| Version | 1.0.0 |
| Name | IRI |
| Title | Internationalized Resource Identifier (IRI) |
| Status | active |
| Definition | As defined by RFC 3987 (http://www.ietf.org/rfc/rfc3987.txt). Internationalized Resource Identifiers (IRIs) are the internationalized version of URIs (which are also defined as a NamingSystem as https://terminology.hl7.org/4.0.0/NamingSystem-uri.html) that allow Unicode characters to be used in the identifier with some restrictions, which was defined by the Internet Engineering Task Force (IETF) in 2005. An IRI such as 'https://hi.wikipedia.org/wiki/हृदय' can be percent-encoded into the URI 'https://hi.wikipedia.org/wiki/%E0%A4%B9%E0%A5%83%E0%A4%A6%E0%A4%AF' to be used as a URL, but the IRI is easier to read, particularly for readers of non-Latin languages, and is natively supported by many tools, including many browsers, HTTP libraries, and in the Resource Description Framework (RDF). IRI values SHALL NOT be used in Identifier.system or Coding.system. They SHALL only be used in Identifier.value (where Identifier.system = urn:ietf:rfc:3987). |
| Type | Value | Preferred |
| URI | urn:ietf:rfc:3987 | true |
History
| Date | Action | Author | Custodian | Comment |
| 2025-11-13 | revise | Gaurav Vaidya | ITS | Make explicit that IRI identifiers are not intended to be used in Identifier.system or Coding.system; up-465 |
| 2023-06-17 | create | Gaurav Vaidya | ITS | Add IRIs to the External Known Identifier Systems; up-406 |