Reviewed by Morgan Heminger · Updated September 23, 2026

What Is D2392? (CDT Code Overview)

CDT code D2392 is the dental procedure code for a two-surface resin-based composite restoration on a posterior tooth, such as a tooth-colored MO or DO filling on a premolar or molar. It belongs to the Restorative category of CDT codes (Resin-Based Composite Restorations, Direct subcategory). One surface is D2391 and three surfaces is D2393; a two-surface composite on a front tooth is D2331.

When Should You Use D2392?

The D2392 dental code applies to resin-based composite restorations covering two surfaces on posterior teeth. This CDT code is utilized when patients need tooth-colored fillings (composite materials) on molars or premolars where decay or structural damage affects two surfaces (such as occlusal and proximal areas). It's crucial to differentiate D2392 from related codes like D2391 (single surface) and D2393 (three surfaces). Proper code selection guarantees appropriate reimbursement and adherence to insurance protocols.

Quick reference: Use D2392 when the clinical scenario specifically matches two-surface posterior composite restorations. Do not use this code as a substitute for related procedures in the same category. Consider whether D2330 (Anterior Composite Restorations) or D2331 (Anterior Composite Restoration) might be more appropriate instead.

D2392 vs. Similar CDT Codes: Key Differences

Dental teams frequently confuse D2392 with other codes in the resin-based composite restorations range. Here is how D2392 differs from the most commonly mixed-up codes:

Documentation Requirements for D2392

Accurate documentation is vital for successful claim approval. When submitting D2392, ensure clinical records clearly indicate:

• Specific tooth number and restored surfaces

• Primary diagnosis (dental caries, fracture, or failed restoration replacement)

• Pre-treatment and post-treatment radiographs or clinical photographs when available

• Procedural details including anesthetic administration and restoration materials

Typical clinical applications for D2392 involve addressing interproximal decay on posterior teeth or repairing teeth following minor fractures. Documentation must consistently support the necessity for a two-surface composite restoration, as insurance carriers may request additional evidence or reject insufficiently detailed claims.

Documentation checklist for D2392:

• Patient chief complaint and relevant medical/dental history clearly recorded.

• Clinical findings that support the use of D2392 specifically (not a more general or more specific code).

• Any diagnostic tests, imaging, or supplementary data that justify the procedure.

• Treatment plan with rationale connecting the diagnosis to the procedure coded as D2392.

• Post-procedure notes, including outcomes and follow-up recommendations.

Insurance and Billing Guide for D2392

To optimize reimbursement and prevent claim denials when submitting D2392:

• Confirm benefits: Check patient insurance plans for posterior composite coverage, as certain policies may downgrade payments to amalgam fee schedules.

• Provide comprehensive narratives: When replacing existing restorations, document the original placement date and replacement rationale.

• Include supporting materials: Submit radiographic images and clinical photos with claims to establish treatment necessity.

• Ensure accurate coding: Verify that surface designations and tooth numbers correspond with clinical documentation and imaging.

• Review payment explanations: Examine Explanation of Benefits for downgrades or rejections, and prepare appeal submissions with supplementary documentation when required.

Maintaining thorough insurance verification and documentation practices helps minimize accounts receivable delays and supports efficient revenue cycle operations.

Common denial reasons for D2392: Lack of clinical documentation, frequency limitations exceeded, code mismatch with diagnosis, or missing prior authorization. When appealing a denied D2392 claim, include a detailed narrative explaining why the procedure was necessary, supporting clinical evidence, and relevant imaging or test results. Many practices find that well-documented first submissions dramatically reduce the need for appeals.

What major payers publish about D2392:

• Delta Dental of Virginia treats posterior composites (other than premolar buccal surfaces) as optional under its model policy and pays an alternate benefit up to the amalgam fee, with the difference collectable from the patient. A replacement within 24 months by the same office is not billable (Delta Dental of Virginia Participating Dentists' Handbook, 2026).

• Cigna allows a replacement filling only for recurrent decay, breakdown or open margins, and not when the same office redoes the same tooth and surfaces within 12 months or when the tooth has a questionable prognosis (Cigna Dental Coverage Determination Guidelines, 2026).

• UnitedHealthcare needs a narrative of necessity when the tooth has an existing crown, and does not consider a direct filling indicated for incipient enamel-only lesions or teeth with a hopeless prognosis (UnitedHealthcare Dental Claim Review Guidelines, January 2026; UnitedHealthcare Single Tooth Direct Restorations policy DCP023.15, May 2026).

These are the payers' published policy documents; the patient's own plan can set different frequencies and alternate benefits, so confirm them during insurance verification.

To improve your overall claims workflow, explore 5 Steps to Verify Dental Insurance (Without Burning Out Your Team).

Real-World Case Example: Billing D2392

A patient presents requiring a procedure consistent with D2392 (two-surface posterior composite restorations). The treating dentist documents the clinical findings, performs the procedure as indicated, and records detailed notes including the diagnosis, technique, and outcome. The billing team verifies insurance coverage, submits the claim with D2392 and supporting documentation, and follows up to ensure timely reimbursement. When the initial claim is processed, the practice reviews the Explanation of Benefits and addresses any discrepancies promptly.

Related CDT Codes to D2392

If you are researching D2392, you may also need to reference these related CDT codes in the resin-based composite restorations range and beyond:

• D2140: Amalgam Restoration Guide — Learn when to use D2140 and how it differs from D2392.

• D2150: Two-Surface Amalgam Restoration — Learn when to use D2150 and how it differs from D2392.

• D2330: Anterior Composite Restorations — Learn when to use D2330 and how it differs from D2392.

• D2331: Anterior Composite Restoration — Learn when to use D2331 and how it differs from D2392.

• D2332: Two-Surface Anterior Composite — Learn when to use D2332 and how it differs from D2392.

Frequently Asked Questions About D2392

Is D2392 applicable for anterior teeth or restricted to posterior teeth only?

D2392 is exclusively intended for posterior teeth, including premolars and molars. For anterior teeth such as incisors and canines, separate codes are utilized for composite restorations. It's essential to consult CDT code descriptions to ensure accurate code selection based on the specific tooth location. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D2392 will strengthen your position in any audit or appeal scenario.

What are typical causes for insurance claim denials when using D2392?

Frequent denial reasons include inadequate documentation like missing radiographs or clinical notes, incorrect application of D2392 for inappropriate tooth types, or insurance plans downgrading composite restorations to amalgam equivalents. Maintaining comprehensive documentation and confirming plan benefits prior to treatment helps reduce denial occurrences. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D2392 will strengthen your position in any audit or appeal scenario.

Are there frequency restrictions for billing D2392 on identical teeth?

Most insurance policies impose frequency restrictions on restoration billing for the same tooth and surfaces, typically limiting coverage to once every 2-5 years. It's crucial to review the patient's individual insurance policy for specific frequency limitations prior to submitting D2392 claims. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D2392 will strengthen your position in any audit or appeal scenario.

What is the typical reimbursement range for D2392?

2026 Medicaid fee schedules give a public reference point for D2392: Medi-Cal Dental allows up to $48.00 (Medi-Cal Dental Schedule of Maximum Allowances, July 2026), New York Medicaid pays $67.67 (New York Medicaid dental fee schedule, January 2026), Florida Medicaid pays $61.21 for patients under 21 (Florida AHCA Dental Fee Schedule, January 2026) and Texas Medicaid pays

What is the typical reimbursement range for D2392?

11.65 for patients under 21 (Texas Medicaid (TMHP) THSteps dental fee schedule). Commercial PPO reimbursement depends on the payer contract, your region and network status, so the most reliable number for your practice is the allowed amount on your recent EOBs for D2392.

Does D2392 require prior authorization?

Prior authorization requirements for D2392 depend on the patient's specific insurance plan. Some carriers require advance approval for procedures coded under D2392, while others process claims without it. Best practice is to verify authorization requirements during insurance eligibility checks before the appointment. If prior authorization is required, submit the request with detailed clinical notes and supporting documentation to avoid delays in patient care and claim processing.