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SNOMED CT International Edition

Download SNOMED CT International Edition releases and related international files from this page. Click on the file name to see more information and to download the release file. NLM distributes the SNOMED CT International Edition and derivatives to licensed individuals via the UMLS Terminology Services. Please see the Licensing page to learn more about licensing and how to register to obtain an Affiliate License.

Please note - The US Edition provides a single source of SNOMED CT content for use in the United States. The SNOMED CT US Edition is a standalone release that contains the content of both the US Extension and the International Editions of SNOMED CT.

For older versions of all SNOMED CT Releases see the Archives page.

Current International Edition Release

Version: January 2019

Release Date: January 31, 2019

SNOMED CT terminology provides a common language that enables a consistent way of indexing, storing, retrieving, and aggregating clinical data across specialties and sites of care. The release notes provide a summarized description of the content changes included in the January 2019 release.

Download RF2 Files Now!

Download Release Notes

Online version of Release Notes

MD5 hashes:

RF2 package: 7daf368c88bf8da84b230c24307cdb04

Release Notes: d7afffde56b722864e187aa29106d312


Reminder: In 2015, SNOMED International (IHTSDO), announced the deprecation and withdrawal of support for Release Format 1 (RF1). The plan and timeline can be reviewed on the IHTSDO News page. This package is provided in RF2 only. Additionally, the Release Notes and OWL Resource file have been separated from the International Edition release package and are available as standalone downloads.

Version: October 2018 SNOMED CT Spanish Edition

Release Date: October 2018

Download Spanish Edition Files Now (version 20181031)

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View Release Notes

Please Note: The IHTSDO may be notified of users who download SNOMED CT from non-Member countries.

Additional SNOMED CT International Release Files

Version: July 2018 v1.0

Release Date: 2018-09-26

This is the Production release of the July 2018 ICNP to SNOMED CT (Diagnoses) package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2018 International Edition, and so should be consumed and analysed accordingly.

For more information please refer to the release notes, which can either be downloaded from this repository, or accessed online here: ICNP to SNOMED CT (Diagnoses) Equivalency Table Release Notes - July 2018

Download ICNP to SNOMED CT (Diagnoses) Equivalency Table

Download Release Notes

View Release Notes

File checksum (MD5):

RF2 package: 545269a9baa335abc4e9ed3d200b037b

Release Notes: 7a6f6cb3586d30ac5fd1d1a23d35b90e

Version: July 2018 v1.0

Release Date: 2018-09-26


This is the Production release of the July 2018 ICNP to SNOMED CT (Interventions) package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2018 International Edition, and so should be consumed and analysed accordingly.

For more information please refer to the release notes, which can either be downloaded from this repository, or accessed online here: ICNP to SNOMED CT (Interventions) Equivalency Table Release Notes - July 2018

Download ICNP to SNOMED CT (Interventions) Equivalency Table

Download Release Notes

View Release Notes

File checksum (MD5):

RF2 package: c99463977bdf4102275ba22ba2c6834a

Release Notes: e4e544930f5e053b598cb709861a9886

Version: January 2019

Release Date: 2019-04-12


The SNOMED CT International General/Family Practice subset (GP/FP Subset) and map from the GP/FP Subset to the International Classification of Primary Care (ICPC-2). This release is resulting work from the harmonization agreement between the IHTSDO and WONCA. Access to the SNOMED CT to ICPC-2 map is provided through a collaboration agreement between WONCA and IHTSDO. Users of the map must comply with the licensing agreements of both ICPC-2 and SNOMED CT.

The version of SNOMED CT used is the January 2019 International Edition release.

The map is based on ICPC-2e-v.4.2 May 2012.


NOTICE: SNOMED International and WONCA have put forth a proposal to deprecate the SNOMED CT to ICPC-2 map after this January 2019 release. SNOMED International will soon be pushing this through the formal deprecation process. Please contact info@snomed.org with any questions, comments, or concerns.


Download GP/FP and ICPC2 Release

Download SNOMED CT to ICPC2 Release Notes

Download GP/FP-SNOMED CT Release Notes

File checksum (MD5):

RF2 package: 1eca1d3ffb74c2bf88a94e623e5ce652

GP/FP Release Notes: 00d1722ea91c0ac50c968e86ddecdcaa

ICPC2 Release Notes: a21cfae15fef365762106214169d11a7

Version: July 2018 v1.0

Release Date: 2018-09-19


This is the Production release of the July 2018 SNOMED CT Nursing Activities refset package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2018 International Edition, and so should be consumed and analysed accordingly.

For more information please refer to the release notes, which can either be downloaded from this repository, or accessed online here: SNOMED CT Nursing Activities Reference Set Release Notes - July 2018


Download SNOMED CT Nursing Activities Refset

Download Release Notes

View Release Notes

File checksum (MD5):

RF2 package: 71077a9ac5ecc692010719597516e2ad

Release Notes: 33d1c8b7bc95500e79942bd9cf2a3c90

Version: July 2018 v1.0

Release Date: 2018-09-19


This is the Production release of the July 2018 SNOMED CT Nursing Health Issues refset package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2018 International Edition, and so should be consumed and analysed accordingly.

For more information please refer to the release notes, which can either be downloaded from this repository, or accessed online here: SNOMED CT Nursing Health Issues Reference Set Release Notes - July 2018


Download SNOMED CT Nursing Activities Refset

Download Release Notes

View Release Notes

File checksum (MD5):

RF2 package: 4e975265efde70342f2baaf102c1c16d

Release Notes: f226c7ce21517c9c4b9940f91ee5cb98

Version: July 2018 v1.0

Release Date: 2018-09-25


This package contains the SNOMED CT Odontogram refset, which includes a set of SNOMED CT content from the International Release - primarily terms from four of the SNOMED CT hierarchies:

  1. Procedures
  2. Body Structures
  3. Findings
  4. Disorders

For those who are starting to implement SNOMED CT in Dentistry, you should be aware that SNOMED CT contains a large amount of content relevant to the profession. An additional related product is the SNOMED CT General Dentistry Diagnostic refset package.

This is the Production release of the July 2018 SNOMED CT Odontogram refset package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2018 International Edition, and so should be consumed and analysed accordingly.

For more information please refer to the release notes, which can either be downloaded from this repository, or accessed online here: SNOMED CT Odontogram refset package Release Notes - July 2018


Download SNOMED CT Odontogram Refset (Version 20180331)

Download SNOMED CT Odontogram Release Notes

View Release Notes

File checksum (MD5):

RF2 package: bf3f36724a44d5511806db39cf9f3d18

Release Notes: b33a9a17ba7bbcca615325a225c3770b

Version: July 2018 v1.0

Release Date: 2018-09-24


The SNOMED CT General Dentistry Diagnostic refset package contains the SNOMED CT General Dentistry refset of diagnostic terms, designed to provide dentistry with an easy to implement set of terms that covers the vast majority of care provided in the dental field.

This is the Production release of the July 2018 SNOMED CT General Dentistry Diagnostic refset package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2018 International Edition, and so should be consumed and analysed accordingly.

For more information please refer to the release notes, which can either be downloaded from this repository, or accessed online here: SNOMED CT General Dentistry Diagnostic refset package Release Notes - July 2018


Download SNOMED CT Odontogram Refset (Version 20180331)

Download SNOMED CT Odontogram Release Notes

View Release Notes

File checksum (MD5):

RF2 package: 8abb0f29c7e086d5ef73c6a44158f6ae

Release Notes: 7c31c5a04e7b3a2ec3142b91829ae230

Release Date: August 2017

Release Notes: This release contains two content files: a LOINC Term to SNOMED CT Expression Reference Set and a LOINC Part to SNOMED CT Reference Set. The Beta content is release under the 715515008 | LOINC - SNOMED CT Cooperation Project module with concept identifiers from the 220170731 version of the International release of SNOMED CT and Version 2.58 of LOINC released December 2016.

Please Note: This release is distributed for evaluation purposes only and should not be used in production clinical systems or in the clinical setting.

Download SNOMED CT - LOINC Beta Release (Version 20170831)

Download SNOMED CT - LOINC Release Release Notes

Release Date: February 2017

This package contains the SNOMED CT International Edition concept model represented using RF2 reference sets. In addition to the four new MRCM refsets, the Beta release package also contains various files (Concept, Description, etc) containing supporting content from the prospective July 2017 SNOMED CT International Edition. These are provided in order to aid the consumption and analysis of the MRCM refsets, and should not be used for any other purpose.

Please Note: This supporting content is provisional, and can not be considered final until July 31st 2017. It should therefore not be used in any Production systems and should be used only in test systems to aid the evaluation of the MRCM refsets.

Download MRCM Refset

Download Release Notes

Permanent Packages were previously included in the SNOMED CT International Edition Release Format 1 (RF1) distribution. Because the files do not change from one release to the next, as of January 2015, the files have been made permanently available to IHTSDO Member National Release Centers and Affiliate Licensees via Internet download. They are no longer included in the International Edition.

Go to the SNOMED CT Release Permanent Packages page

Older versions of SNOMED CT International and US Edition release sources are still made available for research or historical purposes. To obtain deprecated or older versions of SNOMED CT releases, please visit NLM SNOMED CT Archives page:

Go to the Archives page

Additional Information

Terms of use for SNOMED CT are contained in Appendix 2, SNOMED CT Affiliate Licence Agreement, of the License for Use of the UMLS Metathesaurus.

NLM also distributes SNOMED CT through the UMLS Metathesaurus.

See the SNOMED CT main page for more information about SNOMED CT activities at NLM.

Last Reviewed: July 31, 2018