In the world of dental billing, accuracy is everything. One small coding error can delay payments, cause claim denials, or lead to compliance issues. That’s why Current Dental Terminology (CDT) codes are essential for every dental practice whether you’re a new office manager, an experienced biller, or a dentist who wants to streamline revenue cycle management.
In this guide, we’ll break CDT codes down into simple, actionable insights so you can confidently use them in your daily workflow.
What Are CDT Codes?
CDT codes are a standardized set of dental procedure codes created and maintained by the American Dental Association (ADA).
They serve three main purposes:
Describe dental procedures and services clearly.
Standardize communication between dental professionals, insurers, and regulatory bodies.
Support accurate claims processing for insurance reimbursement.
Think of CDT codes as the “language” dental professionals and insurance companies use to ensure everyone understands exactly what service was performed.

Why CDT Codes Matter for Dental Practices
Smooth Insurance Claims: Using the right CDT code increases the chance of your claim being accepted the first time.
Accurate Billing: It ensures patients are billed correctly for the services they’ve received.
Compliance & Record-Keeping: CDT codes help maintain accurate patient records for audits and legal requirements.
Improved Patient Communication: Codes provide clarity when explaining procedures and costs to patients.
Basic Structure of a CDT Code
A CDT code typically looks like this: D####
D: Indicates that it’s a dental procedure.
####: A 4-digit number representing a specific treatment or service.
For example:
D1110 : Prophylaxis (adult)
D7210: Surgical removal of an erupted tooth requiring bone removal.

Categories of CDT Codes
While there are hundreds of CDT codes, they’re grouped into major categories, such as:
Diagnostic (e.g., exams, X-rays)
Preventive (e.g., cleanings, fluoride treatments)
Restorative (e.g., fillings, crowns)
Endodontics (e.g., root canals)
Periodontics (e.g., gum treatments)
Prosthodontics (e.g., dentures, bridges)
Oral & Maxillofacial Surgery (e.g., extractions, biopsies)
Tips for Using CDT Codes Correctly
Stay Updated: The ADA updates CDT codes annually. Always work from the latest edition.
Cross-Check with Insurance: Verify if the insurer covers the specific code before submitting claims.
Document Thoroughly: Always support your code with detailed clinical notes.
Train Your Team: Ensure everyone involved in billing understands how to use CDT codes properly.
Common Mistakes to Avoid
Using outdated codes:leads to automatic claim rejections.
Guessing codes: inaccurate coding can cause compliance risks.
Skipping documentation: even correct codes can be denied without proper records.
or dental practices, mastering CDT codes is the foundation of smooth billing and fast reimbursement. By learning the basics and keeping your coding knowledge up-to-date, you can avoid costly mistakes, improve cash flow, and maintain compliance.
If your practice struggles with CDT coding or insurance claim delays, our Dental Billing & Healthcare Solutions team can help you optimize your revenue cycle and train your staff for success.