Yes, specific codes are absolutely necessary when billing under a dental insurance plan in the United States. These codes are called CDT codes, which stands for Current Dental Terminology codes. These CDT dental codes are used to clearly describe each dental procedure done by the dentist — such as exams, cleanings, fillings, root canals, or surgeries.

So, what is a CDT code? It’s a five-character code that starts with the letter "D" followed by four numbers — for example, D0120 is the code for a regular dental check-up. These codes help dental offices and insurance companies speak the same “language,” making it easier to file and process claims correctly.

Without using the correct dental CDT codes, your insurance claim can be delayed, rejected, or underpaid. Every procedure must be matched with its official code. These codes are managed by the American Dental Association (ADA) and are updated yearly to stay current with dental technology and practices. The new CDT codes for 2025 include changes like new codes for modern procedures and updates to older ones. These 2025 CDT code changes must be followed starting from January 1, 2025.

To make sure your dental bills are accepted and processed smoothly, dentists must use the right CDT codes for each dental service provided. These codes are required under U.S. health data rules, especially for electronic billing, and they help both patients and insurance providers understand exactly what treatment was given.

In short, yes — using specific and correct CDT codes is not just necessary but required for billing any treatment under a dental insurance plan.