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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.

For the latest planned changes to upcoming SNOMED CT International Release packages, see the Early Visibility Release Notice page.

Current International Edition Release

NOTE: For the latest SNOMED CT SARS-CoV-2/COVID-19 content, see: http://snomed.org/covid-19

Version: April 2022

Release Date: April 29, 2022

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 April 2022 release.

Download RF2 Files Now!Download Release Notes

Online version of Release Notes

MD5 hash for RF2 package:

07ad1a49526aacd3f688440715c1ce42

Announcement - Changes to the International Edition Release Schedule

SNOMED International transitioned to a monthly delivery schedule for the International Edition of SNOMED CT. This transition to monthly releases will necessarily involve a few changes to processes/packages:

  • Delta files have been removed from the release package, but a Delta Generation Tool is available for those who need it. The Delta Generation Tool allows users to create their own Delta between two fixed release dates - you can find it here: https://github.com/IHTSDO/delta-generator-tool/releases.
  • There is no longer any need to separate the Map files from the International Edition - the ICD-0/ICD-10 Maps will continue to be published in each Monthly International Edition release package (in line with that month's content) for the foreseeable future, unless there are issues with the new process in Production, and they need to be removed at a later date.

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: April 2022 SNOMED CT Spanish Edition

Versión Abril 2022 de la Edición en Español de SNOMED CT

Release Date: 2022-04-29

Download Spanish Edition Files Now (version 20220430)

Download Release NotesView Starter Guide

Online version of Release Notes

MD5 hash for RF2 package:

27060d5522e403fd76807a3ac9963240

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

Previous SNOMED CT International Monthly Release Files

Version: March 2022

Release Date: March 31, 2022

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 March 2022 release.

Download RF2 Files Now!Download Release Notes

Online version of Release Notes

MD5 hash for RF2 package:

cec4778f72f565c1e570e27dc529ec30


Version: February 2022

Release Date: February 28, 2022

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 February 2022 release.

Download RF2 Files Now!Download Release Notes

Online version of Release Notes

MD5 hash for RF2 package:

6822bf15976f1dccf10386db8e2cc1a6


Version: January 2022

Release Date: January 31, 2022

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 2022 release.

Download RF2 Files Now!Download Release Notes

Online version of Release Notes

MD5 hash for RF2 package:

e6105424dca4e87514ca9a034057ec99


Additional SNOMED CT International Release Files

Version: May 2022

Release Date: 2022-05-11

This is the Production release of the May 2022 SNOMED CT MedDRA Simple Map package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT January 2022 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 MedDRA Simple Map Release Notes - May 2022

Download SNOMED CT MedDRA Simple Map Package

Download Release NotesView Release Notes

MD5 hash for RF2 package:

9e18fcb3048f1554f79457626b82aa0c

Version: July 2021

Release Date: 2021-10-28

This is the first Production release of the July 2021 SNOMED CT Orphanet Map package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2021 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 Orphanet Map package Release Notes - July 2021

Download SNOMED CT Orphanet Map package

Download Release NotesView Release Notes

MD5 hash for RF2 package:

10a6478b8667ade949c2192860f3c651

Version: July 2021

Release Date: 2021-10-21

This is the Production release of the July 2021 ICNP SNOMED CT Nursing Practice Refset package.

It also contains the one off release of the SNOMED CT to ICNP 2019 equivalence table, which will be published only once, and will not be maintained/updated in future ICNP Releases.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2021 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 ICNP Nursing Practice Refset Release Notes - July 2021

Download SNOMED CT ICNP Nursing Practice Refset

Download Release NotesView Release Notes

MD5 hash for RF2 package:

c2fd58663a8689db4793daecfcf02752

Version: July 2021 v1.0

Release Date: 2021-10-27

This is the Production release of the July 2021 SNOMED CT International Patient Set (IPS) Refset.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2021 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 International Patient Set (IPS) Release Notes - July 2021

Download SNOMED CT International Patient Set (IPS) RefsetDownload Release Notes

MD5 hash for RF2 package:

ec4663aebbc42c359547b338a40c07fb

Version: July 2021 v1.0

Release Date: 2021-10-27


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 2021 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 2021 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 2021


Download SNOMED CT General Dentistry Diagnostic Refset (Version 20211031)

Download SNOMED CT General Dentistry Diagnostic Release NotesView Release Notes

MD5 hash for RF2 package:

4a3b9d61b4d252277fcf9823fc12c356

Version: July 2021 v1.0

Release Date: 2021-10-27


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 2021 SNOMED CT Odontogram refset package.

This package is provided in Release Format 2 (RF2) format only. It is dependent upon the SNOMED CT July 2021 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 2021


Download SNOMED CT Odontogram Refset (Version 20211031)

Download SNOMED CT Odontogram Release NotesView Release Notes

MD5 hash for RF2 package:

69af950c41e75d9939ff5718502a8616

Version: July 2021 v1.0

Release Date: 2021-10-28


This is the Production release of the July 2021 SNOMED CT International General/Family Practice subset (GP/FP Subset). This release is resulting work from the harmonization agreement between the IHTSDO and WONCA.

The version of SNOMED CT used is the July 2021 International Edition release.


Please note: SNOMED International and WONCA have decided to deprecate the SNOMED CT to ICPC-2 map. SNOMED International have therefore inactivated all ICPC-2 map records in the current release package, ceased publishing the ICPC-2 release notes, and removed references to ICPC-2 in package naming conventions. Please contact info@snomed.org with any questions, comments, or concerns.


Download GP/FP Release

Download GP/FP-SNOMED CT Release NotesView GP/FP-SNOMED CT Release Notes

MD5 hash for RF2 package:

1a169b11d7c19aaa3f4645bf27f48340

Version: July 2021 v1.0

Release Date: 2021-10-29


This is the Production release of the July 2021 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 2021 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 2021


Download SNOMED CT Nursing Activities Refset

Download Release NotesView Release Notes

MD5 hash for RF2 package:

e6960ad63731c4572b9ef629039a0687

Version: July 2021 v1.0

Release Date: 2021-10-29


This is the Production release of the July 2021 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 2021 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 2021


Download SNOMED CT Nursing Health Issues Refset

Download Release NotesView Release Notes

MD5 hash for RF2 package:

663af6a48874670c2d3f2afb129dcc95

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 NotesView Release Notes

MD5 hash for RF2 package:

c99463977bdf4102275ba22ba2c6834a

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 NotesView Release Notes

MD5 hash for RF2 package:

545269a9baa335abc4e9ed3d200b037b

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 RefsetDownload 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: April 30, 2021