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The 25 Most Common CDT Codes for Endodontics: A Cheatsheet for Dental Coders
For Providers

The 25 Most Common CDT Codes for Endodontics: A Cheatsheet for Dental Coders

Endodontics is a specialized branch of dentistry that focuses on the diagnosis, prevention, and treatment of diseases and injuries of the dental pulp (the innermost part of the tooth containing nerves, blood vessels, and connective tissue) and the tissues surrounding the roots of a tooth. The most well-known endodontic procedure is the root canal treatment, which involves removing the infected or damaged pulp, cleaning and shaping the inside of the root canals, and then filling and sealing the space to prevent further infection. 

Endodontists also treat dental trauma and perform surgeries to address issues in the roots and surrounding bone. In addition to the root canal, common procedures include pulp therapy, and treatments for traumatic dental injuries. The primary goal of endodontics is to save natural teeth by restoring and maintaining their health and function. 

A comprehensive list of the most common CDT codes for endodontics is tricky to pinpoint, since many procedures might overlap with general dentistry. Nevertheless, we can provide a list of 25 of the most commonly used endodontic CDT codes.

What are CDT codes used for?

Billing and Insurance Claims: CDT codes provide a standardized way to describe dental procedures, making it easier for dental professionals to bill insurance companies and patients. Every dental procedure has a specific CDT code, ensuring consistency across the board.

Uniformity in Treatment Description: CDT codes bring uniformity in describing dental treatment procedures. This means that the same code will refer to the same treatment, no matter which dentist or dental office you visit in the U.S.

Documentation and Records: Dental professionals can use CDT codes in their record-keeping systems. This makes it easier for them to keep track of the treatments they've provided to patients.

Data Analysis and Research: In broader research and public health contexts, standardized codes like CDT allow for the aggregation of data. For example, researchers can study trends in dental treatments, frequency of specific procedures, or assess the needs for particular dental services in specific populations.

Communication: CDT codes facilitate clearer communication between dentists, dental specialists, insurance companies, and other stakeholders. When a dentist refers a patient to a specialist, using CDT codes can provide a precise understanding of what treatments or evaluations are recommended or have been done.

Regulatory Compliance: Some state or federal programs might require the use of CDT codes to ensure compliance with rules and regulations related to dental care reimbursement or reporting.

The American Dental Association (ADA) maintains and updates the CDT codes. The updates typically include additions of new codes, revisions of existing codes, or deletion of outdated codes. These updates ensure that the CDT code system remains relevant and reflects the evolving nature of dental care.

The top 25 CDT codes for endodontists

There are quite a few endodontic CDT codes, but you’ll often find yourself using the same ones over and over again. Thus, memorizing or referring to this list could save you significant time. The 25 most common endodontic CDT codes are as follows:

  1. D3110 - Pulp cap – direct (excluding final restoration)
  2. D3120 - Pulp cap – indirect (excluding final restoration)
  3. D3220 - Therapeutic pulpotomy (excluding final restoration) – removal of pulp coronal to the dentinocemental junction and application of medicament
  4. D3221 - Pulpal debridement, primary and permanent teeth
  5. D3222 - Partial pulpotomy for apexogenesis – permanent tooth with incomplete root development
  6. D3230 - Pulpal therapy (resorption) – anterior, primary tooth (excluding final restoration)
  7. D3240 - Pulpal therapy (resorption) – posterior, primary tooth (excluding final restoration)
  8. D3310 - Anterior (excluding final restoration)
  9. D3320 - Bicuspid (excluding final restoration)
  10. D3330 - Molar (excluding final restoration)
  11. D3331 - Treatment of root canal obstruction; non-surgical access
  12. D3332 - Incomplete endodontic therapy; inoperable, unrestorable or fractured tooth
  13. D3333 - Internal root repair of perforation defects
  14. D3346 - Retreatment of previous root canal therapy – anterior
  15. D3347 - Retreatment of previous root canal therapy – bicuspid
  16. D3348 - Retreatment of previous root canal therapy – molar
  17. D3351 - Apexification/recalcification – initial visit (apical closure/calcific repair of perforations, root resorption, etc.)
  18. D3352 - Apexification/recalcification – interim medication replacement (apical closure/calcific repair of perforations, root resorption, etc.)
  19. D3353 - Apexification/recalcification – final visit (includes completed root canal therapy – apical closure/calcific repair of perforations, root resorption, etc.)
  20. D3410 - Apicoectomy – anterior
  21. D3421 - Apicoectomy – bicuspid (first root)
  22. D3425 - Apicoectomy – molar (first root)
  23. D3426 - Apicoectomy (each additional root)
  24. D3430 - Retrograde filling – per root
  25. D3450 - Root amputation – per root

How to look up CDT codes you don’t know

To look up CDT codes that you don't know:

CDT Manual: Purchase and consult the official CDT manual published by the American Dental Association (ADA). This manual is the definitive source for all CDT codes and contains detailed descriptions for each code.

Online Databases: Some dental software systems or online platforms offer searchable databases of CDT codes. With these tools, you can often input keywords or partial descriptions to find the corresponding codes.

ADA's Website: The ADA might offer tools or resources for members to look up CDT codes.

Consult with Peers: If you're part of a dental group or association, colleagues might be a resource for identifying unfamiliar CDT codes.

Continuing Education and Training: Stay updated with regular training or courses that might include reviews of new, removed, or changed CDT codes.

Always ensure you're using the most current version of the CDT, as codes can be added, altered, or deleted with new editions.

How SuperBill helps with dental coding

If you run a dental practice or you work as a dental biller, SuperBill may be able to help! SuperBill uses sophisticated AI to streamline the process of dental billing. We can automate your calls to insurers, create and manage your dental bills, and even file claims on your patients’ behalf.

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About the Author

Harrison Caruthers

Harrison is a software developer in the Bay Area. Before SuperBill, he worked as an engineer for Amazon in Madrid. While in Spain, Harrison developed an appreciation for both Mediterranean cooking and simplified healthcare systems. He returned to the Bay to co-found SuperBill with fellow Stanford grad Sam Schwager after mounting frustrations with US insurance networks.