UMLS: Unified Medical Language System. UMLS Knowledge Sources: File Downloads. The UMLS License. The UMLS is provided free to all users.
Users of the SPECIALIST Lexicon & Lexical Tools and the Semantic Network should read the terms of use before using either product. Semantic Network Terms of Use Lexical Tools Terms of Use Metathesaurus users are required to complete a license agreement before downloading the product files. Users should read Appendix 1 in the Metathesaurus documentation before using any vocabulary. UMLS - New Users. UMLS Quick Start Guide. Unified Medical Language System® (UMLS®) What is the UMLS?
The UMLS, or Unified Medical Language System, is a set of files and software that brings together many health and biomedical vocabularies and standards to enable interoperability between computer systems. You can use the UMLS to enhance or develop applications, such as electronic health records, classification tools, dictionaries and language translators. UMLS in Use. UMLS Terminology Services. UMLS TermServ. Appendix to the License Agreement for Use of the UMLS® Metathesaurus UMLS METATHESAURUS® SOURCE VOCABULARIES - 2013AB Edition Appendix 1 is a listing of all sources within the current version of the Metathesaurus with an indication of any additional restrictions and notices that apply.
Sources are listed in order according to the abbreviations used in the UMLS Metathesaurus files. All sources are subject to the general terms of the License for Use of the UMLS® Metathesaurus®. The Categories associated with each source are defined in the general license as follows: