Dental Code D2391
Dental Code D2391 Description
Dental Code D2391 is a procedural code used in dentistry to describe a resin-based composite restoration for a posterior tooth. This code is part of the Current Dental Terminology (CDT) maintained by the American Dental Association (ADA).

What Does D2391 Cover?
- Material Used: The restoration is made of a tooth-colored resin composite, which is durable and aesthetically pleasing.
- Tooth Location: The procedure applies to posterior teeth (molars and premolars), which endure significant chewing forces.
- Extent of Restoration: This code is used when the filling covers one, two, or three surfaces of the tooth (e.g., occlusal, mesial, or distal).
When Is D2391 Used?
- Repairing moderate cavities that do not require a crown.
- Replacing old amalgam fillings with tooth-colored alternatives.
- Restoring fractured or worn-down teeth in the back of the mouth.
Comparison with Other Codes
Code | Description | Tooth Type | Material |
---|---|---|---|
D2391 | Resin Composite (1-3 surfaces) | Posterior | Tooth-colored resin |
D2392 | Resin Composite (4+ surfaces) | Posterior | Tooth-colored resin |
D2390 | Resin Composite (Anterior) | Anterior | Tooth-colored resin |
D2140 | Amalgam (1 surface) | Posterior | Metal alloy |
D2391 Dental Code Cost
The cost of a D2391 dental procedure varies based on several factors:
Factors Affecting Cost
- Geographic Location – Fees differ between urban and rural areas.
- Dentist’s Expertise – Specialists may charge more than general dentists.
- Insurance Coverage – Many plans cover 80% of composite fillings.
- Number of Surfaces – A three-surface filling costs more than a single-surface one.
Average Cost Breakdown
Factor | Cost Range |
---|---|
Without Insurance | 150−150−400 per tooth |
With Insurance | 30−30−100 (after 50-80% coverage) |
Out-of-Pocket (High-End Clinics) | Up to $600 |
Does Insurance Cover D2391?
Most PPO dental plans cover resin fillings, but some may only pay for amalgam (metal) fillings unless medically necessary. Always verify with your provider.
CPT Code D2391
Is D2391 a CPT Code?
No, D2391 is a CDT code, not a CPT (Current Procedural Terminology) code. CPT codes are used by medical professionals, while CDT codes are exclusive to dentistry.
Common Misconceptions
- Some patients confuse D2391 with medical billing codes, but it is strictly for dental procedures.
- Medical insurance does not cover D2391 unless under specific surgical conditions.
Conclusion
Dental Code D2391 refers to a resin-based composite filling for posterior teeth, offering durability and aesthetics. Costs vary by location, dentist fees, and insurance coverage. Unlike CPT codes, D2391 is strictly a dental billing code. Always consult your dentist and insurance provider before treatment.
FAQs
1. Is D2391 the same as a white filling?
Yes, D2391 refers to a tooth-colored resin composite filling, commonly called a white filling.
2. How long does a D2391 filling last?
Typically 7-10 years, depending on oral hygiene and chewing habits.
3. Does Medicaid cover D2391?
Some Medicaid plans cover resin fillings for front teeth only, while others may include posterior teeth. Check your state’s policy.
4. Can D2391 be used for cavities between teeth?
Yes, if the cavity affects 1-3 surfaces, D2391 applies.
5. Why choose resin over amalgam for posterior teeth?
Resin is aesthetic, bonds better to tooth structure, and contains no mercury, but may cost more.