D6104Bone Graft for Retaining Existing Implant - Each Additional Implant

What This Code Covers

D6104 covers bone graft for retaining existing implant - each additional implant. Graft material or membrane is placed around a dental implant to promote bone regeneration. This is billed in addition to the primary implant procedure.

Billing Guide

Bill this code when:

• The graft procedure described by D6104 is performed
• The graft material type and site match the code description
• Documentation includes the defect size, graft material, and surgical technique

Do not bill this code when:

• The graft type or material does not match this code
• The graft is included in another surgical code being billed at the same visit
• No actual graft material was placed
• The procedure is better described by D6084 (Implant supported crown - porcelain fused to titan...)

Insurance and Denial Prevention

Key Payer Rules:

• Fixed prosthodontic procedures are typically covered as major services
• Implant coverage varies widely by plan. Many plans exclude implants entirely
• Material downgrades may apply (high noble to base metal)
• Prior authorization is commonly required for implant and bridge procedures

Common Denials and How to Respond:

• Implants not covered - Check if the medical plan covers implants when the dental plan does not. Submit a detailed treatment narrative.
• Material downgrade - Bill the actual material placed and inform the patient of any balance due to plan downgrades.
• Missing tooth clause - Some plans exclude replacement of teeth that were missing before the plan effective date. Verify plan terms.