Unified Medical Language System® (UMLS®)
SNOMED CT ® Release Files
Download SNOMED CT Releases and related files from this page. Click on the file name to start the download.
International Release January 2014
The International Release is updated each year in January and July. The download contains SNOMED CT files in both Release Format 1 (RF1) and the new Release Format 2 (RF2) versions. See the next section for RF2 to RF1 compatibility tools.
Download File: SnomedCT_Release_INT_20140131.zip (532 MB)
Contents: SNOMED CT terminology, cross maps, and subsets. ICD-9-CM Cross Map (RF1 and RF2), ICD 10 Cross Map (RF2 only).
RF2 to RF1 Version Compatibility Tools for International Release January 2014
Compatibility tools provide backward compatibility from RF2 release files, enabling users to generate RF1 version format from RF2 release files.
Conversion Application Download File: SnomedCT_RF2toRF1Conversion_INT_20140131.zip (44 MB)
Data Download File: SnomedCT_RF1CompatibilityPackage_INT_20140131.zip (189 MB)
Contents: RF2 to RF1 conversion application; Supporting data files for RF2 to RF1 conversion.
Edición en Español April 2014
The Spanish Edition of the International Release is updated each year in April and October.
Download File: SnomedCT_Release-es_INT_20140430.zip (148 MB)
Contents: Spanish translations of SNOMED CT International Release January 2014 descriptions and documentation in both RF1 and RF2 (Candidate Baseline Release) versions.
Notes: Terminology will also be available in Metathesaurus format in UMLS 2014AB Release, November 2014.
SNOMED CT International Medical Devices January 2013
The SNOMED CT International Medical Devices Project aligns SNOMED CT content with the Global Medical Devices Nomenclature (GMDN).
Download File: SnomedCT_MedicalDevicesTechnologyPreview_INT_20130131.zip (5 MB)
Contents: Medical devices technology preview; RF2 only.
Notes: These files are for evaluation purposes only. They are not part of the January 2013 International Release and are not recommended for use in clinical systems.
We welcome feedback about the medical devices terminology. Send comments to NLM Customer Service with the subject "SNOMED CT International Medical Devices" by February 28, 2013.