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titleContents of this Page
Table of Contents

Overview of the NCI Metathesaurus (NCIm)

NCI Metathesaurus (NCIm) is a wide-ranging biomedical terminology database that covers most terminologies used by NCI for clinical care, translational and basic research, and public information and administrative activities.


In addition to the NCIm and the NCIt, the EVS servers provide access to a variety of other vocabulary products such as MedDRA, CTCAE, GO, ICD-9-CM, RadLex, SNOMED CT, LOINC and NDF-RT.

Additional Information

titleFAQs on the Vocabulary Knowledge Center

NCI Metathesaurus FAQs

titleMetamorphoSys Information

This announcement affects users who download the full NCI Metathesaurus and use the NCI provided MetamorphoSys for viewing. In early 2010 EVS will be upgrading MetamorphoSys to the latest code line used by NLM. In the background there are significant changes, but the user interface experience is substantially similar. There are a few additional features (new filters, new browser features, etc). You can find more information in the release notes. If you are interested in more details, view the webcast.

How to Provide Comments and Suggestions

Comments and suggestions may be emailed to the NCIm team at