HL7 Terminology (THO)
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This page is part of the HL7 Terminology (v5.5.0: Release) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

CodeSystem: Universal Resource Locator Scheme

Official URL: http://terminology.hl7.org/CodeSystem/v3-URLScheme Version: 3.0.0
Active as of 2019-03-20 Responsible: Health Level Seven International Computable Name: URLScheme
Other Identifiers: urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#urn:oid:2.16.840.1.113883.5.143

Copyright/Legal: This material derives from the HL7 Terminology THO. THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license

A Universal Resource Locator (URL) is a type of telecommunications address specified as Internet standard RFC 1738 [http://www.isi.edu/in-notes/rfc1738.txt]. The URL specifies the protocol and the contact point defined by that protocol for the resource.

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

CodeURITypeDescription
SpecializesCodingThe child code is a more narrow version of the concept represented by the parent code. I.e. Every child concept is also a valid parent concept. Used to allow determination of subsumption. Must be transitive, irreflexive, antisymmetric.
GeneralizesCodingInverse of Specializes. Only included as a derived relationship.
internalIdhttp://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-idcodeThe internal identifier for the concept in the HL7 Access database repository.
statushttp://hl7.org/fhir/concept-properties#statuscodeDesignation of a concept's state. Normally is not populated unless the state is retired..

Concepts

This case-sensitive code system http://terminology.hl7.org/CodeSystem/v3-URLScheme defines the following codes in a Is-A heirarchy:

CodeDisplayDefinitioninternalIdstatus
cid Content ID

Description: cid: is the most common mechanism used in webservices. A cid: reference points from the SOAP body to other content in the mime package in which the SOAP envelope is wrapped

22603active
file File

Host-specific local file names [RCF 1738]. Note that the file scheme works only for local files. There is little use for exchanging local file names between systems, since the receiving system likely will not be able to access the file.

14872active
ftp FTP

The File Transfer Protocol (FTP) [RFC 1738].

14871active
hl7-att HL7 Attachment

Description: A reference to an HL7 attachment by it's identifier, which takes the form hl7-att:[II.literal], such as hl7-att:2.1.16.3.9.12345.2.39.3:ABC123

22604active
http HTTP

Hypertext Transfer Protocol [RFC 2068].

http://www.ietf.org/rfc/rfc2068.txt

14870active
mailto Mailto

Electronic mail address [RFC 2368]

http://www.ietf.org/rfc/rfc2368.txt

14869active
mllp MLLP

Description: Mimimal Lower Layer Protocol. See Transport Specification: MLLP, Release 2 (HL7 V3 Transport specification).

21461active
nfs NFS

Network File System protocol [RFC 2224]. Some sites use NFS servers to share data files.

http://www.ietf.org/rfc/rfc2224.txt

14873active
tel Telephone

A voice telephone number [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt].

14867active
telnet Telnet

Reference to interactive sessions [RFC 1738]. Some sites, (e.g., laboratories) have TTY based remote query sessions that can be accessed through telnet.

http://www.ietf.org/rfc/rfc1738.txt

14874active
fax Fax

A telephone number served by a fax device [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt].

14868retired
modem Modem

A telephone number served by a modem device [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt].

14875retired
x-text-fax Fax

Description: A telephone number served by a fax device [http://www.ietf.org/rfc/rfc3966.txt and http://www.ietf.org/rfc/rfc2806.txt]

22605retired
x-text-tel Text Telephone

Description: A text telephone - a telephone which is designed for use by the hearing-impaired

Notes:

  • x-text-fax is required to replace fax, since this has been deprecated by W3C.
  • hl7-att is associated with a series of rules that must be followed. These rules are documented in Datatypes R2
  • This domain is external and extensible, so documenting this simply clarifies consistent usage for these use cases.
22606retired

History

DateActionCustodianAuthorComment
2023-11-14reviseTSMGMarc DuteauAdd standard copyright and contact to internal content; up-476
2022-10-18reviseTSMGMarc DuteauFixing missing metadata; up-349
2022-02-17 00:00:32+1100reviseVocabulary WGGrahame GrievePopulate Missing caseSensitive property; UP-286
2020-05-06reviseVocabulary WGTed KleinMigrated to the UTG maintenance environment and publishing tooling.