Skip Navigation Bar

Unified Medical Language System® (UMLS®)

UMLS Knowledge Sources: File Downloads

 

2015AA UMLS Full Release Files
May 11, 2015
The full release includes every vocabulary in the Metathesaurus.
2015AA.CHK
2015AA.MD5
2015AA-1-meta.nlm
2015AA-2-meta.nlm
2015AA-otherks.nlm
mmsys.zip
Copyright_Notice.txt
README.txt
2015AA UMLS Active Release Files
May 11, 2015
The active release only includes vocabularies that are actively updated in the Metathesaurus.
2015AA.CHK
2015AA.MD5
2015AA-1-meta.nlm
2015AA-2-meta.nlm
2015AA-otherks.nlm
mmsys.zip
Copyright_Notice.txt
README.txt

For users who wish to automate the download of the UMLS releases, we created scripts for Windows and Mac/Linux/Solaris computers. Combine the scripts with a scheduling tool to automate your downloads. You can download the scripts, along with a README file with instructions.

Download Notes:

  • Download and extract all UMLS data and zip files to the same directory.
  • Read the README file before downloading, which includes information on installing the UMLS Knowledge Sources and highlights changes for this release.
  • Additional documentation is available at http://www.nlm.nih.gov/research/umls.
  • At 1M bits/second, it will take approximately 4 hours to download the complete UMLS release. Use a high-speed internet connection to download the files.
  • Each UMLS release includes MetamorphoSys, required to install Knowledge Sources files, and to create, search and browse customized Metathesaurus subsets. MetamorphoSys requires a minimum of 30 GB of free hard disk and takes 2-10 hours to run on a range of platforms tested. The actual time will depend on your configuration, hardware and operating system platforms.

UMLS Release Archives 2004-2014AB
UMLS Release Archives 2002-2003