LexEVS is the EVS central terminology server, developed by Mayo Clinic with NCI support. NCI LexEVS provides a common terminology model and open access to a wide range of terminologies, terminology value sets, and cross-terminology mappings needed by NCI and its partners. NCI's server is very widely used throughout the biomedical community, and the open source LexEVS server software has been deployed at a number of other sites (see EVS Use and Collaborations).
LexEVS 6.0 was based on the draft standard Common Terminology Services Release 2 (CTS 2) specification. While further development is on hold, 6.0 provides the core CTS 2 functionality important to most users, including Administration, Search and Query, Mapping Support, Value Set Support and Authoring and Maintenance.
This is the NCI Wiki home page for LexEVS technical information and NCI information for early releases. Additional information is available at the caBIG® Vocabulary Knowledge Center.