2nd DSTU Draft For Comment

This page is part of the FHIR Specification (v0.4.0: DSTU 2 Draft). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2

1.22.1.0 Named Systems List

The URIs defined on this page are available as a value set (XML or JSON).

1.22.1.0.1 Known Code Systems

The following names (URIs) may be used in the system element of the Coding data type. If a URI is defined here, it SHALL be used in preference to any other identifying mechanisms. If a code 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 code system
  • consulting the owner of the code system
  • asking on the HL7 vocabulary mailing list
URI Source Comment
http://snomed.info/sct SNOMED CT (IHTSDO) Concept IDs, Expressions and SNOMED Legacy codes (e.g. SCTV3 codes)

See Using SNOMED CT with FHIR

OID=2.16.840.1.113883.6.96
http://www.nlm.nih.gov/research/umls/rxnorm RxNorm (US NLM)

See Using RxNorm with FHIR

OID=2.16.840.1.113883.6.88
http://loinc.org LOINC (LOINC.org)

See Using LOINC with FHIR

OID=2.16.840.1.113883.6.1
http://unitsofmeasure.org UCUM: (UnitsOfMeasure.org) Case Sensitive Codes

See Using UCUM with FHIR

OID=2.16.840.1.113883.6.8
http://ncimeta.nci.nih.gov NCI Metathesaurus

See Using NCI Metathesaurus with FHIR

OID=2.16.840.1.113883.3.26.1.2
http://hl7.org/fhir/ndfrt NDF-RT (National Drug File – Reference Terminology)

See Using NDF-RT with FHIR

OID=2.16.840.1.113883.6.209 (?)
http://fdasis.nlm.nih.gov Unique Ingredient Identifier (UNII)

See Using UNII with FHIR

OID=2.16.840.1.113883.4.9
http://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cvx CVX (Vaccine Admnistered)

See Using CVX with FHIR

OID=2.16.840.1.113883.12.292
urn:iso:std:iso:3166 ISO 2 letter Country Codes

Note: a few country codes have been reused (e.g. CS). If a version is needed, simply use the year of publication e.g. 1998

OID=1.0.3166.1.2.2
http://www.radlex.org/ RadLex
OID=2.16.840.1.113883.6.256
http://hl7.org/fhir/sid/icd-10 ICD-10 International (WHO)
OID=2.16.840.1.113883.6.3
http://hl7.org/fhir/sid/icd-9 ICD-9 USA (CDC)
OID=2.16.840.1.113883.6.42
http://hl7.org/fhir/v2/[X](/v) Version 2 table code [X] is the 4 digit identifier for a table. e.g. http://hl7.org/fhir/v2/0203
Only some tables may be treated in this fashion. For some tables, the meaning of the code is version dependent, and so additional information must be included in the namespace, e.g. http://hl7.org/fhir/v2/0123/2.3+, as defined in the v2 table namespace list. Version 2 codes are case sensitive.
OID=2.16.840.1.113883.12.[X] (note that this is the table OID, which is not the same as the codeSystem OID)

Note: This namespace may be revised in the future
http://hl7.org/fhir/v3/[X] A Version 3 code system, from the list of code systems defined here [X] is the code system name. e.g. http://hl7.org/fhir/v3/GenderStatus
OID=[as specified by the index]. Version 3 code systems are case sensitive.

Note: This namespace may be revised in the future
http://www.whocc.no/atc Anatomical Therapeutic Chemical Classification System (WHO)
OID=2.16.840.1.113883.6.73
urn:std:iso:11073:10101 Medical Device Codes defined in ISO 11073-10101 (see RTM Management service)
The ISO/IEEE 11073-10201 Terminology Code is used in the code element, and the Terminology Reference ID is used in the display element (CODE10 and REFID in the reference)
OID=2.16.840.1.113883.6.24
http://nema.org/dicom/dicm DICOM Code Definitions (DCM)
the meanings of codes defined in DICOM, either explicitly or by reference to another part of DICOM or an external reference document or standard
v2/DICOM code="DCM". OID=1.2.840.10008.2.16.4
http://www.genenames.org HGNC: Human Gene Nomenclature Committee OID=2.16.840.1.113883.6.281
http://www.hgvs.org/mutnomen HGVS : Human Genome Variation Society OID=2.16.840.1.113883.6.282
http://www.ncbi.nlm.nih.gov/projects/SNP DBSNP : Single Nucleotide Polymorphism database OID=2.16.840.1.113883.6.284
http://cancer.sanger.ac.uk/cancergenome/projects/cosmic COSMIC : Catalogue Of Somatic Mutations In Cancer OID=2.16.840.1.113883.3.912
http://www.ncbi.nlm.nih.gov/nuccore REFSEQ : National Center for Biotechnology Information (NCBI) Reference Sequences OID=2.16.840.1.113883.6.280
http://www.lrg-sequence.org LRG : Locus Reference Genomic Sequences OID=2.16.840.1.113883.6.283
http://www.omim.org OMIM : Online Mendelian Inheritance in Man OID=2.16.840.1.113883.6.174
http://www.ncbi.nlm.nih.gov/pubmed PubMed OID=2.16.840.1.113883.13.191
http://www.pharmgkb.org PHARMGKB : Pharmacogenomic Knowledge Base OID=2.16.840.1.113883.3.913
http://clinicaltrials.gov ClinicalTrials.gov OID=2.16.840.1.113883.3.1077

1.22.1.0.2 Known Identifier Systems

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 mechanisms. 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
identifier URI Comment
URIs (W3C): when the identifier is a URI urn:ietf:rfc:3986 As defined by RFC 3986 (with many schemes defined in many RFCs). OIDs and UUIDs are represented in their URN form (urn:oid: and urn:uuid: - plain oid: and uuid: are not used). Note that UUIDs are always lowercase in a IRI
No OID
SSN (US Government) http://hl7.org/fhir/sid/us-ssn US SSN. Represented with dashes removed
OID=2.16.840.1.113883.4.1
Driver's License USA
AK: urn:oid:2.16.840.1.113883.4.3.2
AL: urn:oid:2.16.840.1.113883.4.3.1
AR: urn:oid:2.16.840.1.113883.4.3.5
AZ: urn:oid:2.16.840.1.113883.4.3.4
CA: urn:oid:2.16.840.1.113883.4.3.6
CO: urn:oid:2.16.840.1.113883.4.3.8
CT: urn:oid:2.16.840.1.113883.4.3.9
DC: urn:oid:2.16.840.1.113883.4.3.11
DE: urn:oid:2.16.840.1.113883.4.3.10
FL: urn:oid:2.16.840.1.113883.4.3.12
GA: urn:oid:2.16.840.1.113883.4.3.13
HI: urn:oid:2.16.840.1.113883.4.3.15
IA: urn:oid:2.16.840.1.113883.4.3.19
ID: urn:oid:2.16.840.1.113883.4.3.16
IL: urn:oid:2.16.840.1.113883.4.3.17
KS: urn:oid:2.16.840.1.113883.4.3.20
KY: urn:oid:2.16.840.1.113883.4.3.21
LA: urn:oid:2.16.840.1.113883.4.3.22
MA: urn:oid:2.16.840.1.113883.4.3.25
MD: urn:oid:2.16.840.1.113883.4.3.24
ME: urn:oid:2.16.840.1.113883.4.3.23
MI: urn:oid:2.16.840.1.113883.4.3.26
MN: urn:oid:2.16.840.1.113883.4.3.27
MO: urn:oid:2.16.840.1.113883.4.3.29
MS: urn:oid:2.16.840.1.113883.4.3.28
MT: urn:oid:2.16.840.1.113883.4.3.30
MY: urn:oid:2.16.840.1.113883.4.3.36
NC: urn:oid:2.16.840.1.113883.4.3.37
ND: urn:oid:2.16.840.1.113883.4.3.38
NE: urn:oid:2.16.840.1.113883.4.3.31
NH: urn:oid:2.16.840.1.113883.4.3.33
NJ: urn:oid:2.16.840.1.113883.4.3.34
NM: urn:oid:2.16.840.1.113883.4.3.35
NV: urn:oid:2.16.840.1.113883.4.3.32
OH: urn:oid:2.16.840.1.113883.4.3.39
OK: urn:oid:2.16.840.1.113883.4.3.40
OR: urn:oid:2.16.840.1.113883.4.3.41
PA: urn:oid:2.16.840.1.113883.4.3.42
RI: urn:oid:2.16.840.1.113883.4.3.44
SC: urn:oid:2.16.840.1.113883.4.3.45
SD: urn:oid:2.16.840.1.113883.4.3.46
TN: urn:oid:2.16.840.1.113883.4.3.47
TX: urn:oid:2.16.840.1.113883.4.3.48
UT: urn:oid:2.16.840.1.113883.4.3.49
VA: urn:oid:2.16.840.1.113883.4.3.51
VT: urn:oid:2.16.840.1.113883.4.3.50
WA: urn:oid:2.16.840.1.113883.4.3.53
WI: urn:oid:2.16.840.1.113883.4.3.55
WV: urn:oid:2.16.840.1.113883.4.3.54
WY: urn:oid:2.16.840.1.113883.4.3.56
Driver's licenses are often recorded without recording which authority issued the license. In these cases, use the general identifier http://hl7.org/fhir/drivers-license

Important Note: This list of names 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.

Note that some of the URNs in this list follow the URN specification in RFC 5141 for referring to standards published by ISO, such as urn:std:iso:11073:10101. Where ISO standards define codes with meanings, and there is no entry in the list above, and they are not registered in the HL7 OID registry, the default URN for the code system is that defined by the RFC 5141.