2027 CDT Code Changes: What I Learned

By Mike Adelberg, NADP Executive Director

The Code on Dental Procedures and Nomenclature for 2027, more commonly referred to as the CDT Code, was recently released and will go into effect January 1, 2027. The purpose of the CDT Code is to achieve uniformity, consistency and specificity in accurately recording and reporting dental treatment.

CDT codes affect how dental benefits are processed and the additions, deletions or changes can affect how plans adjudicate claims. So, people who need to know about how dental services are administered and financed should understand the process by which the CDT code is updated.

Last month, the NADP sponsored a webinar to explain the changes to the 2027 version of the code. A special call-out to our subject matter experts, Drs. Cherag Sarkari, LIBERTY Dental Plan and Katie Deffke, United Concordia Dental, for presenting the information during the webinar and also for sharing their insights to inform this blog.

The process: CDT codes are suggested, accepted, amended or rejected by the Code Maintenance Committee (CMC), which was established by the ADA Council on Dental Benefits Programs. Twenty-four members comprise the CMC and each has one vote: Five ADA members, 12 representatives of dental specialty organizations, one representative from the Academy of General Dentistry (AGD), one from American Dental Education Association (ADEA), and five representing dental plans including AHIP, Blue Cross Blue Shield Association (BCBSA), Centers for Medicare and Medicaid Services (CMS), Delta Dental Plan Association (DDPA), and NADP.

CDT is updated annually, and follows a specific process: revision requests submitted by November 1; distribution of requested revisions to CMC December 1; two-day CMC meeting in March to discuss proposed revisions; draft CMC Action Report circulated for review in April; final CDT Code version circulated to licensees in June. It is worth noting that the NADP has a code Sub-Workgroup (SWG) that is actively involved in the process year-round.

Key learnings: The most important takeaway from this cycle is not any single code change, but the continued evolution of CDT to better reflect contemporary dental practice while maintaining administrative clarity for providers, payers, and patients. The CMC approved 67 total changes for CDT 2027, including 28 new codes, 33 revisions, and six editorial updates, which reflect dentistry’s ongoing efforts to ensure that the profession’s procedural vocabulary keeps pace with advances in care delivery.

At a strategic level, two themes emerged from the 2027 discussions.

Continued refinement of preventive care terminology. Several revisions were intended to provide greater specificity around caries management, remineralization, and preventive medicament applications. The final revisions are largely clarifying in nature and are not expected to significantly alter existing clinical policies or benefit structures for most commercial dental plans.

Modernization of orthodontic nomenclature and treatment descriptions. The revisions to adjunctive orthodontic appliance therapy codes (D8210 and D8220) are among the more visible changes in CDT 2027. These updates better describe the role of removable and fixed appliances used independently or in conjunction with comprehensive orthodontic treatment. While the nomenclature changes are meaningful from a coding and documentation standpoint, many commercial plans already administer orthodontic benefits using comprehensive treatment or global payment methodologies. As a result, providers and plans may not experience substantial operational changes, although state Medicaid programs may require additional implementation guidance as they update fee schedules and program policies.

Code changes vs. benefit coverage: Another point worth emphasizing is that CDT code changes and benefit coverage decisions are separate considerations. The purpose of the CDT code set is to accurately describe and report dental procedures. Coverage determinations remain dependent on plan design, purchaser decisions, contractual provisions, and regulatory requirements. Consequently, the addition or revision of a CDT code does not automatically translate into a change in benefit coverage.

Trends: CDT 2027 continues a trend toward increased specificity, improved clinical relevance, and support for emerging treatment modalities across preventive, orthodontic, implant, maxillofacial prosthetic, and adjunctive services. These enhancements strengthen CDT’s role as dentistry’s common language for documentation, claims administration, quality measurement, research, interoperability, and communication among all stakeholders.

Implementation: For dental plans, providers, and vendors, the primary focus over the coming months will be implementation readiness: updating systems, educating stakeholders, refining adjudication logic where necessary, and ensuring a smooth transition for the January 1, 2027 effective date. Overall, CDT 2027 represents refinement rather than disruption. I thank Drs. Sarkari and Deffke, and the many other dedicated professionals who make this an effective process.