This page is part of the FHIR Specification v4.3.0-snapshot1: R4B Snapshot to support the Jan 2022 Connectathon. About the R4B version of FHIR. The current officially released version is 4.3.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2

• Using Codes
• Code Systems
• Value Sets
• Concept Maps
• Identifier Systems

4.6 Known Identifier Systems

FHIR Infrastructure Work Group

Maturity Level: 3

Standards Status: Trial Use

The following names (URIs) may be used in the system element of the Identifier data type. If a URI is defined here, it SHALL be used in preference to any other identifying mechanism. If an identifier system is not listed here, the correct URI may be determined by working through the following list, in order:

• the HL7 OID Registry
• the documentation associated with the identifier
• consulting the owner of the identifier
• asking on the HL7 vocabulary mailing list

See also the list of known coding systems that can be used in the system element of the Coding data type. Additional identifier systems may be registered on the HL7 FHIR registry at http://hl7.org/fhir/registry .

Implementation Note: This list of URIs is incomplete and subject to change. Some values may be dropped and others will likely be added in the coming months as HL7 institutes formal processes around URIs in vocabulary.

The URI column indicates the correct value to use in the Identifier.system. The OID is provided for compatibility with HL7 v2 /CDA based systems. Note that any URL in http://example.org is reserved for testing and documentation purposes.

identifier	URI	OID (for non-FHIR systems)	Type	Comment
URIs (W3C ): when the identifier is a URI	urn:ietf:rfc:3986	2.16.840.1.113883.4.873		As defined by RFC 3986 (with many schemes defined in many RFCs). For OIDs and UUIDs, use the URN form (urn:oid: (note: lowercase) and urn:uuid:
DICOM Unique Id	urn:dicom:uid			An OID issued under DICOM OID rules. DICOM OIDs are represented as plain OIDs, with a prefix of "urn:oid:"
United States Social Security Number	http://hl7.org/fhir/sid/us-ssn	2.16.840.1.113883.4.1	SB (US)	The SSN is represented in resources with dashes removed
United States Medicare Number	http://hl7.org/fhir/sid/us-medicare	2.16.840.1.113883.4.572	SB (US)	Medicare Numbers (HIC or HICN) are represented without any spaces or dashes
Medicare Beneficiary Identifier (United States)	http://hl7.org/fhir/sid/us-mbi	2.16.840.1.113883.4.927	SB (US)	Medicare Beneficiary Identifiers are represented without any spaces or dashes
United States National Provider Identifier	http://hl7.org/fhir/sid/us-npi	2.16.840.1.113883.4.6	PRN (US)
Global Trade Item Number (GTIN)	https://www.gs1.org/gtin	1.3.160		Note: GTINs may be used in both Codes and Identifiers
Alaska Driver's License	urn:oid:2.16.840.1.113883.4.3.2	2.16.840.1.113883.4.3.2	DL (US)
Alabama Driver's License	urn:oid:2.16.840.1.113883.4.3.1	2.16.840.1.113883.4.3.1	DL (US)
Arkansas Driver's License	urn:oid:2.16.840.1.113883.4.3.5	2.16.840.1.113883.4.3.5	DL (US)
Arizona Driver's License	urn:oid:2.16.840.1.113883.4.3.4	2.16.840.1.113883.4.3.4	DL (US)
California Driver's License	urn:oid:2.16.840.1.113883.4.3.6	2.16.840.1.113883.4.3.6	DL (US)
Colorado Driver's License	urn:oid:2.16.840.1.113883.4.3.8	2.16.840.1.113883.4.3.8	DL (US)
Connecticut Driver's License	urn:oid:2.16.840.1.113883.4.3.9	2.16.840.1.113883.4.3.9	DL (US)
DC Driver's License	urn:oid:2.16.840.1.113883.4.3.11	2.16.840.1.113883.4.3.11	DL (US)
Delaware Driver's License	urn:oid:2.16.840.1.113883.4.3.10	2.16.840.1.113883.4.3.10	DL (US)
Florida Driver's License	urn:oid:2.16.840.1.113883.4.3.12	2.16.840.1.113883.4.3.12	DL (US)
Georgia Driver's License	urn:oid:2.16.840.1.113883.4.3.13	2.16.840.1.113883.4.3.13	DL (US)
Hawaii Driver's License	urn:oid:2.16.840.1.113883.4.3.15	2.16.840.1.113883.4.3.15	DL (US)
Indiana Driver's License	urn:oid:2.16.840.1.113883.4.3.18	2.16.840.1.113883.4.3.18	DL (US)
Iowa Driver's License	urn:oid:2.16.840.1.113883.4.3.19	2.16.840.1.113883.4.3.19	DL (US)
Idaho Driver's License	urn:oid:2.16.840.1.113883.4.3.16	2.16.840.1.113883.4.3.16	DL (US)
Illinois Driver's License	urn:oid:2.16.840.1.113883.4.3.17	2.16.840.1.113883.4.3.17	DL (US)
Kansas Driver's License	urn:oid:2.16.840.1.113883.4.3.20	2.16.840.1.113883.4.3.20	DL (US)
Kentucky Driver's License	urn:oid:2.16.840.1.113883.4.3.21	2.16.840.1.113883.4.3.21	DL (US)
Louisiana Driver's License	urn:oid:2.16.840.1.113883.4.3.22	2.16.840.1.113883.4.3.22	DL (US)
Massachusetts Driver's License	urn:oid:2.16.840.1.113883.4.3.25	2.16.840.1.113883.4.3.25	DL (US)
Maryland Driver's License	urn:oid:2.16.840.1.113883.4.3.24	2.16.840.1.113883.4.3.24	DL (US)
Maine Driver's License	urn:oid:2.16.840.1.113883.4.3.23	2.16.840.1.113883.4.3.23	DL (US)
Michigan Driver's License	urn:oid:2.16.840.1.113883.4.3.26	2.16.840.1.113883.4.3.26	DL (US)
Minnesota Driver's License	urn:oid:2.16.840.1.113883.4.3.27	2.16.840.1.113883.4.3.27	DL (US)
Missouri Driver's License	urn:oid:2.16.840.1.113883.4.3.29	2.16.840.1.113883.4.3.29	DL (US)
Mississippi Driver's License	urn:oid:2.16.840.1.113883.4.3.28	2.16.840.1.113883.4.3.28	DL (US)
Montana Driver's License	urn:oid:2.16.840.1.113883.4.3.30	2.16.840.1.113883.4.3.30	DL (US)
New York Driver's License	urn:oid:2.16.840.1.113883.4.3.36	2.16.840.1.113883.4.3.36	DL (US)
North Carolina Driver's License	urn:oid:2.16.840.1.113883.4.3.37	2.16.840.1.113883.4.3.37	DL (US)
North Dakota Driver's License	urn:oid:2.16.840.1.113883.4.3.38	2.16.840.1.113883.4.3.38	DL (US)
Nebraska Driver's License	urn:oid:2.16.840.1.113883.4.3.31	2.16.840.1.113883.4.3.31	DL (US)
New Hampshire Driver's License	urn:oid:2.16.840.1.113883.4.3.33	2.16.840.1.113883.4.3.33	DL (US)
New Jersey Driver's License	urn:oid:2.16.840.1.113883.4.3.34	2.16.840.1.113883.4.3.34	DL (US)
New Mexico Driver's License	urn:oid:2.16.840.1.113883.4.3.35	2.16.840.1.113883.4.3.35	DL (US)
Nevada Driver's License	urn:oid:2.16.840.1.113883.4.3.32	2.16.840.1.113883.4.3.32	DL (US)
Ohio Driver's License	urn:oid:2.16.840.1.113883.4.3.39	2.16.840.1.113883.4.3.39	DL (US)
Oklahoma Driver's License	urn:oid:2.16.840.1.113883.4.3.40	2.16.840.1.113883.4.3.40	DL (US)
Oregon Driver's License	urn:oid:2.16.840.1.113883.4.3.41	2.16.840.1.113883.4.3.41	DL (US)
Pennsylvania Driver's License	urn:oid:2.16.840.1.113883.4.3.42	2.16.840.1.113883.4.3.42	DL (US)
Rhode Island Driver's License	urn:oid:2.16.840.1.113883.4.3.44	2.16.840.1.113883.4.3.44	DL (US)
South Carolina Driver's License	urn:oid:2.16.840.1.113883.4.3.45	2.16.840.1.113883.4.3.45	DL (US)
South Dakota Driver's License	urn:oid:2.16.840.1.113883.4.3.46	2.16.840.1.113883.4.3.46	DL (US)
Tennessee Driver's License	urn:oid:2.16.840.1.113883.4.3.47	2.16.840.1.113883.4.3.47	DL (US)
Texas Driver's License	urn:oid:2.16.840.1.113883.4.3.48	2.16.840.1.113883.4.3.48	DL (US)
Utah Driver's License	urn:oid:2.16.840.1.113883.4.3.49	2.16.840.1.113883.4.3.49	DL (US)
Virginia Driver's License	urn:oid:2.16.840.1.113883.4.3.51	2.16.840.1.113883.4.3.51	DL (US)
Vermont Driver's License	urn:oid:2.16.840.1.113883.4.3.50	2.16.840.1.113883.4.3.50	DL (US)
Washington Driver's License	urn:oid:2.16.840.1.113883.4.3.53	2.16.840.1.113883.4.3.53	DL (US)
Wisconsin Driver's License	urn:oid:2.16.840.1.113883.4.3.55	2.16.840.1.113883.4.3.55	DL (US)
West Virginia Driver's License	urn:oid:2.16.840.1.113883.4.3.54	2.16.840.1.113883.4.3.54	DL (US)
Wyoming Driver's License	urn:oid:2.16.840.1.113883.4.3.56	2.16.840.1.113883.4.3.56	DL (US)