NCI Metathesaurus

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The NCI Metathesaurus is product of the US National Cancer Institute's Enterprise Vocabulary Service, a collaborative effort of the NCI Center for Bioinformatics and the NCI Office of Communications. The NCI Metathesaurus is based on NLM's Unified Medical Language System Metathesaurus supplemented with additional cancer-centric vocabulary.

The public version of the NCI Metathesaurus currently contains all public domain vocabularies from the National Library of Medicine's UMLS Metathesaurus, as well as a growing number of NCI-specific vocabularies developed by the National Cancer Institute.

The public version of the NCI Metathesaurus also contains proprietary vocabularies. Certain vocabularies, such as ICD-10 and ICD-O-3, are made available, by permission, for non-commercial use only. Others, specifically MedDRA, are made available subject to license restrictions.

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Note: the text of the first version of this article was adapted from the public domain text at