CDT 2026 Code Changes: What Changed and How to Prepare for the Next Update

CDT 2026 took effect on January 1, 2026, with 60 changes to the dental code set: 31 additions, 14 revisions, 6 deletions and 9 editorial changes, according to ADA News. The biggest area of change was anesthesia and sedation coding. Dental offices should use the official CDT 2026 manual or ADA resources for exact codes and descriptors, and start preparing now for CDT 2027.

The Code on Dental Procedures and Nomenclature, known as the CDT Code and published in the ADA’s Current Dental Terminology manual, is the HIPAA standard code set for dental procedures. It is owned and maintained by the American Dental Association (ADA) and changes every year. This article explains how the update process works, summarizes what changed for 2026 at a high level, and gives a practical checklist for keeping your office current. We do not reproduce code descriptors here, because the CDT Code is licensed by the ADA.

How does the ADA update CDT codes each year?

The ADA’s Code Maintenance Committee (CMC) reviews requests to add, revise or delete codes. Anyone can submit a request, including dentists, dental organizations and payers. The committee includes representatives from dental organizations and from the payer community, and it votes on each request at an annual meeting. Approved changes are published in the next CDT manual and take effect on January 1.

A typical cycle looks like this:

1. Request deadline in the fall. For example, the ADA set November 1, 2026 as the deadline for requests to be considered for CDT 2028.
2. Committee meeting in early spring. The CMC met in March 2026 to decide changes for CDT 2027.
3. Announcement of decisions. The ADA publishes a summary of accepted changes after the meeting.
4. Publication of the manual. The new CDT book and digital products are released in the fall.
5. Effective date. The new code set takes effect on January 1.

Because the CDT Code is a HIPAA standard, payers are expected to accept the version in effect on the date of service. In practice, some plans take time to update their systems, which is one reason the first weeks of a new year bring more rejections.

What changed in CDT 2026?

ADA News reported that CDT 2026 includes 60 changes. At a high level:

• Anesthesia and sedation overhaul. This was the largest set of changes, with new and revised codes for sedation and anesthesia and one older non-IV sedation code discontinued. The ADA also published a coding guide focused on nitrous oxide, sedation and general anesthesia to help offices choose among the new options.
• New diagnostic codes, including point-of-care saliva testing and cracked tooth testing.
• Occlusal guard care, with a new code for cleaning and inspecting an occlusal guard.
• Revisions to existing restorative and other codes, which can change when a code applies even if its number stays the same.

For the full list, use the CDT 2026 manual, the ADA’s CDT app, or the ADA’s published summaries. Do not rely on a vendor’s list alone, and do not assume a code number means the same thing it did last year. Revised descriptors matter as much as new codes.

What is coming in CDT 2027?

The ADA has already announced the changes for CDT 2027, which take effect January 1, 2027. ADA News reported 67 changes: 28 additions, 33 revisions, no deletions and 6 editorial changes. Areas affected include implant services (such as new codes related to healing caps and removing screw-retained restorations), fixed splints, interim fixed dentures, attachments, orthodontic revisions, neuromodulator administration and chemodenervation, and orofacial pain injections. A resin-based composite crown code is also being revised so it is no longer limited to anterior teeth.

Now, in the fall, is the right time to plan for these changes, while the new manual is becoming available and before the January 1 switch.

How should a dental office prepare for a CDT update?

Use a simple checklist every year:

1. Buy the new code set. Get the official CDT manual or app for the coming year. It is the only reliable source for codes and descriptors.
2. Update your practice management software. Install the vendor’s annual code update and confirm that new codes appear, deleted codes are inactive for future dates, and fees are attached to new codes.
3. Review your fee schedule. Set office fees for new codes and check whether PPO fee schedules include them.
4. Update templates and route slips. Clinical note templates, treatment plan templates and quick-pick lists often still point to old codes.
5. Train providers and staff. Focus on the areas your office uses most. For 2026, that meant sedation for many practices; for 2027, implant and orofacial pain changes may matter more.
6. Watch for treatment planned under old codes. Treatment planned in December but delivered in January must be billed with the code valid on the date of service.
7. Check payer policies. Some plans publish how they will handle new codes, including whether they will cover them.
8. Monitor January claims closely. Look for rejections that mention invalid or deleted codes and fix the cause rather than each claim one by one.

What are common mistakes after a CDT update?

• Billing a deleted code for a date of service after January 1.
• Using a new code before its effective date.
• Leaving new codes without a fee, which can produce zero-dollar claims.
• Assuming a revised code still applies in the same situations as before.
• Copying code lists from unofficial websites that may be incomplete or wrong.

Our guide to dental billing codes explains how the CDT categories are organized, and our overview of the dental insurance billing process shows where coding fits in each claim.

How do payers handle new CDT codes?

Payers must accept valid CDT codes for the date of service, but accepting a code is not the same as covering it. When a new code appears, each plan decides whether the service is a covered benefit, what frequency limits apply and how it maps to the plan’s fee schedule. Some plans map a new code to an existing benefit category; others treat it as not covered until the employer group’s contract is updated. That is why the same new code may be paid by one plan, downgraded by another and denied as not covered by a third.

For in-network practices, check whether your PPO fee schedules list fees for the new codes. If a plan has not published a fee, ask provider relations how it will process the code. Write the answer down with the date and the representative’s name, because early-year processing often changes as plans update their systems. Explain to patients in advance when a newer code’s coverage is uncertain, and give them an estimate that reflects that uncertainty.

How can you submit a CDT change request?

If your office performs a procedure that the code set does not describe well, you can submit a change request to the ADA through its published process. Requests generally need to explain the procedure, why existing codes are not adequate and how the change would be used. The ADA posts the request form, deadlines and past committee decisions on its CDT pages. Many requests come from dental specialty organizations, so working through your specialty society is another route.

Where can you get the official CDT code list?

The ADA publishes the CDT Code in its annual manual, in a companion app and through licensed software. The ADA website also posts information about the CDT Code, the Code Maintenance Committee and summaries of each year’s changes. Your practice management software vendor typically delivers the annual code update under its own license with the ADA. If you work with a billing partner, ask how they keep their team current each year. Our dental billing and dental claims processing teams follow the annual updates and work inside your software, so updates apply where your claims are created.

Getting ready for January 1?

If you want a second set of eyes on your code update plan before CDT 2027 takes effect, book a free consultation. We can go through your fee schedule, templates and the procedures you perform most and flag the spots that usually cause January rejections.