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“SNOMED Clinical Terms (SNOMED CT) is an extensive clinical terminology that was formed by the merger, expansion, and restructuring of SNOMED RT® (Reference Terminology) and the United Kingdom National Health Service (NHS) Clinical Terms (also known as the Read Codes). It is the most comprehensive clinical vocabulary available in English (or any language). SNOMED CT is concept-oriented and has an advanced structure that meets most accepted criteria for a well-formed, machine-readable terminology. It has been designated as a US standard for electronic health information exchange in Interoperability Specifications produced by the Healthcare Information Technology Standards Panel and has also been adopted for use by the U.S. Federal Government, through the Consolidated Health Informatics (CHI) Initiative, for several clinical domains.” “SNOMED CT provides the core general terminology for the electronic health record (EHR) and contains more than 311,000 active concepts with unique meanings and formal logic-based definitions organized into hierarchies. When implemented in software applications, SNOMED CT can be used to represent clinically relevant information consistently, reliably and comprehensively as an integral part of producing electronic health records.”
General information
Vocabulary alternative name or acronym: 


Vocabulary type: 
Was vocabulary created as a course project: 
Scope and Usage
Used By: 

Digital Imaging and Communications in Medicine (DICOM); American Academy of Ophthalmology

Overlap with related vocabularies: 

Encompasses the United Kingdom National Health Service (NHS) Clinical Terms (also known as the Read Codes). The UMLS Metathesaurus contains the complete SNOMED CT in English and Spanish.

Vocabulary characteristics
Type of terms: 

Clincial concepts and terminology

Terms and Conditions
Licensing Options: 
The UMLS license contains the SNOMED CT® Affiliate Licence Agreement as Appendix 2. Users must accept the terms at, the contents of Appendix 1, and the contents of Appendix 2 to receive a UMLS license code.
Import/download instructions : 
: “MetamorphoSys, free Java software, is distributed with the UMLS to assist users in producing subsets of the Metathesaurus. It includes some predefined filters for generating subsets that include SNOMED. Users are able to modify filters and defaults to generate a desired subset of the Metathesaurus, or write their own custom filters. Any output from MetamorphoSys includes some basic UMLS Metathesaurus data, e.g., NLM Concept Unique Identifiers (CUIs) as well as Lexical Unique Identifiers (LUIs), and String Unique Identifiers, SUIs). The UMLS RRF Browser, also free Java software distributed with the UMLS content, allows users to browse any subset output by MetamorphoSys.” “Effective MAY 15, 2007, UMLS licensees may obtain the English and Spanish editions of SNOMED CT in their native file formats from the UMLS Knowledge Sources Server.”
Vocabulary provider name: 
The National Library of Medicine, National Institutes of Health
Provider URL: