authors:
- email: cthoyt@gmail.com
  github: cthoyt
  name: Charles Tapley Hoyt
  orcid: 0000-0003-4423-4370
description: 'Prefixes mentioned on the _external_ list on the FHIR [Code Systems](https://hl7.org/fhir/terminologies-systems.html)
  page. This list is mostly complete. Notably, some entries that have not been curated:


  - HGVS (see discussion at [#460](https://github.com/biopragmatics/bioregistry/issues/460))

  - [NUBC](http://www.nubc.org) (National Uniform Billing Committee) - could not find
  information about the terminology or its entries

  - [ICPC](http://www.ph3c.org/) (International Classification of Primary Care) _same_

  - [GTIN](https://www.gs1.org/standards/id-keys/gtin) (Global Trade Item Number)
  _same_

  - [MDC](https://www.iso.org/standard/37890.html) (Medical Device Codes) since that
  appears to be part of a larger ISO standard vocabulary that needs further investigation'
identifier: 0000009
name: FHIR External Terminologies
resources:
- atcc
- clinicaltrials
- clinvar.variation
- cosmic.gene
- cpt
- cvx
- dbsnp
- dicom
- dsm5
- ensembl
- hc.din
- hc.npn
- hgnc
- hl7.v2codesystem
- hl7.v3codesystem
- icd10
- icd9
- icf
- ietf.language
- imgt.hla
- iso.3166
- loinc
- lrg
- ncit
- ndc
- ndfrt
- nucc.taxonomy
- omim
- pharmgkb.gene
- pubmed
- radlex
- refseq
- rxnorm
- snomedct
- so
- ucum
- unii
