D6104 Dental Code: Bone Graft During Implant Placement (Billing Guide 2026)

Reviewed by Morgan Heminger · Updated September 23, 2026

What Is D6104? (CDT Code Overview)

CDT code D6104 is the dental procedure code for a bone graft placed at the same visit as the implant, to fill defects or improve the bone contour around the new implant. A barrier membrane or biologic material is reported separately. It belongs to the Implant Services category of CDT codes (Surgical Services subcategory). If you need the bone graft code for repairing a defect around an existing implant, that is D6103; a ridge preservation graft in an extraction socket is D7953.

When Should You Use D6104?

The D6104 dental code applies to bone grafting procedures conducted during dental implant placement. This CDT code is utilized when bone enhancement is required to support proper implant stability and osseointegration. It's important to note that D6104 is exclusively for grafts performed concurrently with implant placement, not for separate or staged procedures. Dental professionals should not apply this code for grafts at extraction sites or ridge preservation procedures—these situations require different CDT codes, such as D7953 for bone graft for ridge preservation.

Quick reference: Use D6104 when the clinical scenario specifically matches bone graft during implant placement. Do not use this code as a substitute for related procedures in the same category. Consider whether D6094 (Abutment Supported Crown) or D6100 (Implant Removal Procedures) might be more appropriate instead.

D6104 vs. Similar CDT Codes: Key Differences

Dental teams frequently confuse D6104 with other codes in the fixed partial denture retainers (inlays/onlays) range. Here is how D6104 differs from the most commonly mixed-up codes:

Documentation Requirements for D6104

Proper documentation is crucial for successful D6104 reimbursement. Clinical records must clearly document:

• The clinical need for bone grafting during implant placement
• The exact location and tooth number involved
• The graft material type and amount utilized
• Radiographic evidence demonstrating the augmentation requirement

Typical clinical situations include cases with inadequate bone volume or quality at the implant location, frequently resulting from prior tooth extraction, periodontal conditions, or injury. Recording the clinical justification and including before-and-after radiographic images will support your claim and minimize denial risks.

Documentation checklist for D6104:

• Patient chief complaint and relevant medical/dental history clearly recorded.
• Clinical findings that support the use of D6104 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 D6104.
• Post-procedure notes, including outcomes and follow-up recommendations.

For a deeper look at documentation best practices, see our guide on How Clinical Documentation Quality Drives Dental Claim Approvals.

Insurance and Billing Guide for D6104

Processing D6104 claims demands careful attention and proactive insurer communication. Consider these recommended practices for dental billing staff:

• Confirm benefits: Numerous dental insurance plans treat bone grafting during implant placement as a separate benefit or may exclude coverage entirely. Always confirm benefits prior to treatment and record insurer responses in patient files.
• Include supporting materials: Provide clinical documentation, radiographic images, and a detailed explanation of the graft's medical necessity. This improves claim approval chances.
• Apply proper coding: Avoid procedure unbundling. Use D6104 only when grafting occurs during the same visit as implant placement.
• Challenge rejected claims: When an Explanation of Benefits denies coverage, examine the denial rationale, enhance your appeal with additional evidence, and cite the CDT code description for D6104.

Common denial reasons for D6104: Lack of clinical documentation, frequency limitations exceeded, code mismatch with diagnosis, or missing prior authorization. When appealing a denied D6104 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 D6104:

• Aetna asks for a current dated full-mouth series and/or panoramic X-ray, extraction dates of the teeth being replaced, all missing teeth and the tooth numbers of the proposed implants. For implants placed right after an extraction, all other active periodontal disease must be treated and under control, and bone graft benefits vary by plan (Aetna Claim Documentation Guidelines, July 2025; Aetna Dental Clinical Policy Bulletin 009, May 2025).
• Cigna allows D6104 only on plans that cover implant surgery, when it is reported on the same date as a covered implant placement to repair a bone defect or improve contour. It is not allowed at an existing implant, with an extraction or implant removal without a new implant, or at an edentulous site (Cigna Dental Coverage Determination Guidelines, 2026).
• UnitedHealthcare needs current dated X-rays of the area and a narrative of necessity with D6104 (UnitedHealthcare Dental Claim Review Guidelines, January 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 The Ultimate Insurance Verification Form Template.

Real-World Case Example: Billing D6104

A patient presents requiring a procedure consistent with D6104 (bone graft during implant placement). 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 D6104 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 D6104

If you are researching D6104, you may also need to reference these related CDT codes in the fixed partial denture retainers (inlays/onlays) range and beyond:

• D6010: Endosteal Implant Body Placement — Learn when to use D6010 and how it differs from D6104.
• D6011: Second Stage Implant Surgery Access — Learn when to use D6011 and how it differs from D6104.
• D6100: Implant Removal Procedures — Learn when to use D6100 and how it differs from D6104.
• D6101: Peri-Implant Defect Debridement and Surface Cleaning — Learn when to use D6101 and how it differs from D6104.
• D6102: Peri-Implant Defect Debridement and Osseous Contouring — Learn when to use D6102 and how it differs from D6104.

Frequently Asked Questions About D6104

Can D6104 be billed when bone grafting is done separately from implant placement?

No, D6104 is specifically intended for bone grafts performed simultaneously with dental implant placement during the same appointment. When bone grafting is completed at a separate visit, providers should use an appropriate alternative code that accurately represents grafting procedures performed in preparation for future implant placement. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D6104 will strengthen your position in any audit or appeal scenario.

Which bone graft materials are commonly utilized in D6104 procedures?

D6104 procedures typically involve various bone graft materials including autografts (harvested from the patient), allografts (processed donor bone), xenografts (bone derived from animal sources), and alloplasts (synthetic bone substitute materials). Material selection depends on the specific clinical circumstances and practitioner preference, with proper documentation required in the patient's treatment records. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D6104 will strengthen your position in any audit or appeal scenario.

Do most dental insurance plans require preauthorization for D6104?

Preauthorization requirements for D6104 differ among dental insurance carriers. Many insurers may mandate preauthorization or predetermination prior to treatment, particularly when implant-related procedures are classified as elective treatments. Providers should verify coverage requirements with the patient's insurance carrier before proceeding to prevent potential claim denials. Always verify with the specific insurance carrier, as policies and coverage rules can vary significantly between payers. Maintaining thorough documentation for D6104 will strengthen your position in any audit or appeal scenario.

What is the typical reimbursement range for D6104?

2026 Medicaid fee schedules give a public reference point for D6104: New York Medicaid pays $252.50 with prior authorization (New York Medicaid dental fee schedule, January 2026). D6104 is not a covered, separately priced service on the Medi-Cal Dental, Florida Medicaid or Texas THSteps fee schedules. 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 D6104.

Does D6104 require prior authorization?

Prior authorization requirements for D6104 depend on the patient's specific insurance plan. Some carriers require advance approval for procedures coded under D6104, 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.