Code Maintenance Committee (CMC)

The Code Maintenance Committee (CMC) convened its Annual Meeting on March 7, 2025, to determine which action requests on its agenda would be accepted for inclusion in CDT 2026. This version of the code set is effective January 1, 2026, through December 31, 2026.

The “CMC Meeting Action Summary” report is available to review or download. There are 60 changes to CDT code entries in CDT 2026 — 31 additions, 14 revisions, 6 deletions and 9 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 2026 manual.

March 2025 CMC Meeting Action Summary (PDF)

March 2026 Meeting Notice

The next annual CMC meeting is scheduled to convene at ADA Headquarter, 401 N. Michigan Avenue, 32nd floor on March 5th and 6th, 2026 (Thursday – Friday). Proceedings begin at 8:30 AM CST on the 5th. 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.

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

CDT 2026 Editorial Action Request Inventory Summary (PDF)

CDT 2026 Substantive Submissions Summary Inventory (PDF)

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).

• CMC Committee Protocol

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.

Milestones

• November 1st
  Closing date for submissions to be addressed during the next annual CMC meeting. There are no exceptions.
• 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.