CDT codes are updated every year. Since CDT 2023 there are codes for 3D dental surface scans (D0801 for a direct intraoral scan, D0802 for an indirect scan of a model), which answers the common question of whether an iTero or other intraoral scan can be coded — reimbursement still depends on the payer.
AI scribes increasingly suggest CDT codes from the clinical conversation; the dentist remains responsible for the codes submitted.
How the code set works
Each code starts with D followed by four digits and belongs to a category such as diagnostic (D0100–D0999), preventive (D1000–D1999) or restorative (D2000–D2999). The American Dental Association publishes a new version every January with additions, revisions and deletions.
Using a deleted code leads to claim rejection, so practice management software must be updated before the new year.
Why it matters for software
Fee schedules, insurance estimates, claim forms and production reports are all built on CDT codes. The code set is licensed, which is one reason practice management software carries an annual update or support fee.