CDT codes (Code on Dental Procedures and Nomenclature) are standardized procedure codes maintained by the American Dental Association (ADA) for reporting dental treatments to insurance payers. This searchable 2025 reference covers preventive, restorative, endodontic, periodontic, prosthodontic, oral surgery, and orthodontic CDT codes — helping dental offices submit clean claims and reduce billing errors.
| Code | Description | Category | ADA Category |
|---|---|---|---|
| D0120 | Periodic oral evaluation - established patient | Diagnostic | I. Diagnostic |
| D0150 | Comprehensive oral evaluation - new or established patient | Diagnostic | I. Diagnostic |
| D0210 | Intraoral - complete series of radiographic images | Diagnostic | I. Diagnostic |
| D0220 | Intraoral - periapical first radiographic image | Diagnostic | I. Diagnostic |
| D0274 | Bitewings - four radiographic images | Diagnostic | I. Diagnostic |
| D0330 | Panoramic radiographic image | Diagnostic | I. Diagnostic |
| D1110 | Prophylaxis - adult | Preventive | II. Preventive |
| D1120 | Prophylaxis - child | Preventive | II. Preventive |
| D1206 | Topical application of fluoride varnish | Preventive | II. Preventive |
| D1351 | Sealant - per tooth | Preventive | II. Preventive |
| D2140 | Amalgam - one surface, primary or permanent | Restorative | III. Restorative |
| D2150 | Amalgam - two surfaces, primary or permanent | Restorative | III. Restorative |
| D2391 | Resin-based composite - one surface, posterior - permanent | Restorative | III. Restorative |
| D2392 | Resin-based composite - two surfaces, posterior - permanent | Restorative | III. Restorative |
| D2740 | Crown - porcelain/ceramic | Restorative | III. Restorative |
| D2750 | Crown - porcelain fused to high noble metal | Restorative | III. Restorative |
| D2950 | Core buildup, including any pins when required | Restorative | III. Restorative |
| D3310 | Endodontic therapy, anterior tooth (excluding final restoration) | Endodontics | IV. Endodontics |
| D3320 | Endodontic therapy, premolar tooth (excluding final restoration) | Endodontics | IV. Endodontics |
| D3330 | Endodontic therapy, molar tooth (excluding final restoration) | Endodontics | IV. Endodontics |
| D4341 | Periodontal scaling and root planing - four or more teeth per quadrant | Periodontics | V. Periodontics |
| D4355 | Full mouth debridement to enable a comprehensive oral evaluation and diagnosis on a subsequent visit | Periodontics | V. Periodontics |
| D4910 | Periodontal maintenance | Periodontics | V. Periodontics |
| D5110 | Complete denture - maxillary | Prosthodontics | VI. Prosthodontics |
| D5120 | Complete denture - mandibular | Prosthodontics | VI. Prosthodontics |
| D5213 | Maxillary partial denture - cast metal framework with resin denture bases | Prosthodontics | VI. Prosthodontics |
| D6010 | Surgical placement of implant body: endosteal implant | Oral Surgery | VII. Oral & Maxillofacial Surgery |
| D7140 | Extraction, erupted tooth or exposed root | Oral Surgery | VII. Oral & Maxillofacial Surgery |
| D7210 | Extraction, erupted tooth requiring removal of bone and/or sectioning of tooth | Oral Surgery | VII. Oral & Maxillofacial Surgery |
| D7230 | Removal of impacted tooth - partially bony | Oral Surgery | VII. Oral & Maxillofacial Surgery |