Welcome to EVS

NCI Enterprise Vocabulary Services (EVS) provides resources and services to meet NCI needs for controlled terminology, and to facilitate the standardization of terminology and information systems across the Institute and the larger biomedical community (see Use and Collaborations).

Key EVS terminology resources include:

• NCI Thesaurus is a reference terminology used in a growing number of NCI and other systems. It provides rich textual and ontological descriptions of 100,000 key biomedical concepts.
• NCI Metathesaurus is a comprehensive biomedical terminology database, connecting 3,600,000 terms from more than 70 terminologies, including some propriety vocabularies with restrictions on their use.
• NCI Term Browser publishes all terminologies hosted by NCI EVS in an integrated environment, providing search, cross-links, and a user friendly interface to ICD-9-CM, CTCAE, MedDRA, SNOMED CT, NDF-RT, GO, and many other terminologies and ontologies used by NCI and its partners.

These and other resources and services are described on this EVS Web site, and on the companion EVS NCI Wiki and EVS caBIG Web sites.

EVS is a service of the Center for Biomedical Informatics and Information Technology (CBIIT). It is a key component of the cancer Common Ontologic Resource Environment (caCORE) and the cancer Biomedical Informatics Grid (caBIG).