Unified Medical Language System® (UMLS®)
Metathesaurus
- Metathesaurus License
- UMLS Reference Manual
- Mapping Projects
Mapping basics, LOINC to CPT Mapping information.
Release Information
- Current Release -- Notes, bugs, license, metadata, and general statisics for the current Metathesaurus Release.
- Forthcoming Releases -- Lists sources to be updated in future releases.
- Documentation Archive -- Documentation dating from 2002AA.
Sources
- MeSH
- RxNorm
- LOINC®
- SNOMED CT®
- Source Release Documentation -- Synopsis, contact information and statistics for each new and updated source in the current Metathesaurus Release.
- Source Vocabulary FAQ -- Frequently Asked Questions about the sources vocabularies in the Metathesaurus.
