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Unified Medical Language System® (UMLS®)

Convergent Medical Terminology (CMT) Release Files

The files include:

  • descriptions that are used as display names for Clinicians in Kaiser Permanente's electronic medical record,
  • corresponding patient display names that the members see in their PHR portal, and
  • mappings to other terminologies.

For older Convergent Medical Terminology (CMT) Release Files, please see the SNOMED CT Archives page.

2017 CMT Subsets Release Files

Vascular Procedures List

Release Date: June 1, 2017

This procedure list subset inlcudes 80 concepts that Kaiser Permanente uses within the KP electronic medical record. This file also includes mappings to CPT. SNOMED CT concepts are based on the March 2017 United States Edition, which includes the January 2017 International Release.

Vascular Procedures List


Convergent Medical Terminology (CMT) is a set of clinician- and patient friendly terminology, linked to US and international interoperability standards, and related vocabulary development tools and utilities. Developed by Kaiser Permanente over many years for use within its health-IT systems, CMT now includes more than 75,000 concepts.

In September 2010 Kaiser Permanente, the International Health Terminology Standards Development Organisation (IHTSDO) and the US Department of Health and Human Services jointly announced Kaiser Permanente's donation of their CMT content and related tooling to the IHTSDO. The donation consists of terminology content already developed, a set of tools to help create and manage terminology and processes to control the quality of terminology that is developed. CMT also includes mappings to classifications and standard vocabularies including SNOMED CT.

Additional information about CMT is available as an FAQ.

License Requirements

NLM distributes both the internationally relevant CMT content (also distributed by the IHTSDO) and the US-specific CMT content. Use of CMT is subject to the license provisions outlined in the License Agreement for Use of the UMLS Metathesaurus which include license provisions relating to SNOMED CT in Appendix 2.

Feedback and suggestions

We welcome any questions, comments or suggestions relating to CMT. Please send feedback to NLM Customer Support.