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VSAC Support Center

Request a UMLS License

  • Access to the Value Set Authority Center for viewing and/or downloading value sets, such as those including CPT® or SNOMED CT® codes, requires a free Unified Medical Language System® Metathesaurus License.
  • Please note it may take 1-5 business days to obtain a license.
  • After your license has been approved, go to the VSAC Web page and click 'Sign In' with your UMLS username and password.