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.

March 2024 CMC Meeting Action Summary Report

The Code Maintenance Committee (CMC) convened its Annual Meeting on March 7, 2024 to determine which action requests on its agenda would be accepted for inclusion in CDT 2025. This version of the code set is effective January 1, 2025 through December 31, 2025.

The “CMC Meeting Action Summary” report is available to review or download. There are 24 changes to CDT code entries in CDT 2025 – 10 additions, 8 revisions, 2 deletions and 4 editorials. Details of each accepted action request (code number; nomenclature; descriptor) as submitted or as amended by the CMC will be published in the CDT 2025 manual.

March 2024 CMC Meeting Action Summary (PDF)

March 2025 Meeting Notice

The next annual CMC meeting is scheduled to convene at ADA Headquarter on March 6 – 7, 2025 (Thursday- Friday). Proceedings begin at 8:30 AM on the 6th. This 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, which may be accomplished in less than the two days scheduled.
March 2024 CMC Meeting Summary Inventory

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

March 2024 CMC Meeting Action Requests (PDF)

March 2024 Editorial Action Requests (PDF)

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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