Code Maintenance Committee (CMC)

CDBP established its Code Maintenance Committee to ensure that all stakeholders have an active role in evaluating and voting on CDT Code changes. It is the body that votes to accept, amend or decline requests. The CMC is expected to arrive at decisions that are in the best interests of the profession and patients, and third-party payers/administrators.

2023 March CMC Meeting and Agenda Information

Meeting Notice

Due to special circumstance the CMC meeting is scheduled for a single day on Thursday, March 9, 2023. The meeting convenes at ADA Headquarters in Chicago. Proceedings begin at 8:00 AM and will adjourn no later than 4:00 PM.

This CMC meeting:

  • is when committee member organization representatives discuss and vote to accept, amend or reject action requests on the agenda;
  • is an open meeting that includes, as directed by the Chair, opportunities for public (“Observer”) comment on action requests discussed by the committee; and
  • will formally adjourn when the CMC has addressed all agenda items

CDT Code Action Requests on the committee’s agenda are in the hyperlinked downloadable PDF, available to any interested person or organization.

March 2023 CMC Meeting Action Requests

March 2023 CMC Meeting Agenda

2022 March CMC Meeting Action Report

The Code Maintenance Committee (CMC) convened its Annual Meeting on March 10, 2022 to determine which action requests on its agenda would be accepted for inclusion in CDT 2023.  This version of the code set is effective January 1, 2023 through December 31, 2023. 

The “CMC Meeting Action Summary” report is available to review or download. There are 38 changes to be included in CDT 2023 – 22 additions, 14 revisions, 2 deletions and 0 editorial. Details of each accepted action request (code number; nomenclature; descriptor) as submitted or as amended by the CMC will be published in the CDT 2023 manual.

Detailed information about all action requests as submitted is in this previously posted PDF.

The Code Maintenance Committee (CMC) convened its Annual Meeting on March 10, 2022 to approve changes to be incorporated into CDT 2023. Information about the CMC’s decisions on all code set maintenance requests will be in the Meeting Action Summary report to be posted here by April 20, 2022.

During this meeting the CMC also approved inclusion of seven new COVID-19 vaccination procedure codes for inclusion in the code set’s current version – CDT 2022. Information about these procedures is in documents posted on the CDT’s “Coding Education” web page "Coding Education" and the “CDT Publication Errata".

CMC Process Document

This publication documents the CDT Code maintenance process.  Content includes the list of Code Maintenance Committee (CMC) member organizations and their responsibilities, overview of the annual maintenance process, and provisions for meeting observers (non-members).

CDT Code Maintenance Timeline

CDT Change requests may be submitted at any time, and the date received determines the CDT Code version that may incorporate the requested action. The annual closing date for submissions is on the CDT Code Maintenance timeline. Any requests received after the closing date will be addressed in the next annual maintenance cycle.


  • November
    Closing date for submissions to be addressed during the next annual CMC meeting
  • March
    Annual CMC Meeting
  • April
    Notification of CMC decisions on action requests sent to submitter
  • 4th Quarter
    Next edition of CDT Manual published
  • January 1st
    Effective date of a CDT version

NOTE: Any requests received after the November 1st closing date will be addressed in the next annual maintenance cycle.

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