UMLS Knowledge Sources Distribution

• Annual updates, 1990 - -

• Free under license agreement with NLM

  • Need separate license agreements with vocabulary producers for some uses of some vocabularies in the Metathesaurus

• Available to licensed users (~900) via Internet server and on CDs

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UMLS has been updated and distributed free of charge on an annual basis since 1990.

For those interested, visit the UMLS website to review the license agreement.