To find the most current and correct codes, dental professionals can trust CDT 2021: Current Dental Terminology book, e-book, and mobile app, which was developed by the ADA, the official source for CDT. 2021 code changes include: 28 new codes 7 revised codes 4 deleted codes CDT 2021 contains new codes for: Counseling for the control and prevention of adverse oral, behavioral, and systemic … Continue reading CDT 2021 Current Dental Terminology