CDT codes and dental insurance billing
CDT (Current Dental Terminology) codes are the universal language of dental insurance billing in the United States. Every procedure submitted to an insurer needs the correct CDT code, and incorrect or outdated codes are one of the most common reasons for claim denials. The ADA updates the CDT code set annually - codes added, revised, or deleted each January 1st.
Insurance companies categorise CDT codes into three tiers that determine coverage percentages: Preventive (typically 100%), Basic (typically 80%), and Major (typically 50%). Knowing the tier for each code helps set patient expectations before treatment. For example, D4341 (scaling and root planing) is often classified as Basic at 80% by some insurers and Major at 50% by others - worth verifying before scheduling.
For fee benchmarks by CDT code, use our Dental Fee Schedule Estimator. For patient cost estimates based on their insurance coverage, direct them to our Dental Insurance Calculator and Copay and Deductible Calculator.