CurrentBlue Cross Blue Shield - WisconsinPolicy 04-201

Periodontal bone grafting — coverage criteria

This policy governs coverage and clinical criteria for periodontal bone grafting procedures for retained natural teeth and peri-implant defects for Blue Cross Blue Shield - Wisconsin members.

Policy Summary

PayerBlue Cross Blue Shield - Wisconsin

PolicyPeriodontal bone grafting — coverage criteria

Policy CodePolicy 04-201

Change TypeNo material change

Effective DateJan 1, 2026

Next Review DateJan 1, 2026

Key ActionSubmit prior authorization with dated radiographs, a letter of rationale, current periodontal charting, and patient health history to support medical necessity.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

14clinical criteria items (some archived)

9procedure codes referenced

12 moradiographs/charting recency

Coverage and Medical Necessity Criteria

Medical necessity criteria

Covered when ALL of the following are met

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Indication: Bone grafting is for replacing missing bone of the maxilla or mandible resulting from periodontal disease or to treat periodontal/peri-implant defects (contract dependent).

See clinical indications

Defect type: Defect is vertical, multi-walled, narrow or a Class II furcation defect; wide horizontal interproximal defects are not appropriate for bone grafting due to limited positive outcomes.

Criteria 1-2

Documentation: Diagnostic-quality, properly oriented, dated pretreatment radiographs within 12 months demonstrating vertical bone defects; current (within 12 months) post-initial therapy 6-point periodontal charting showing minimum pocket depth of 5 mm; letter of rationale describing necessity and relation to other services; recent patient health history and supporting materials (CBCT, photos, narrative) as needed.radiographs/charting within 12 months; pocket depth >= 5 mm

Criteria 5-6,12,14

Conservative therapy first: Completion of initial periodontal therapy (e.g., scaling and root planing) with a minimum four-week healing interval prior to surgical bone grafting to allow assessment of non-surgical therapy success.>= 4 weeks after initial therapy

Criteria 13

Procedure relation and exclusions: Bone grafts performed in conjunction with soft tissue grafting procedures or related to non-covered primary procedures are not considered benefits; bone grafts associated solely with endodontic therapies or minor periradicular surgery are generally not benefited because bone typically heals by secondary intention.

Criteria 3,4,10

Staging and diagnosis: Periodontal diagnosis must follow current AAP and ADA guidelines including staging and grading per professional standards.

Criteria 14

Bone grafting requests will be denied when the graft is performed in direct conjunction with soft tissue grafting procedures or when the graft is related to a non-covered primary procedure. The policy states that bone grafts are not considered for benefits when performed in conjunction with soft tissue grafting procedures, and grafts related to non-covered primary services are similarly excluded from benefit consideration. Providers should ensure the requested bone graft is a standalone, covered periodontal or peri-implant procedure and not ancillary to a non-covered service or combined soft tissue procedure to avoid denial.

Bone graft procedures associated with endodontic therapies or minor periradicular surgery are generally not considered benefits because bone typically heals by secondary intention in these clinical situations. The policy explicitly states that such grafts "may not be benefitted," so submissions for bone grafts performed to address endodontic or minor periradicular indications should not be expected to meet coverage criteria.

Coding, Timing, and Clinical Thresholds

Covered CDT CodesCDTCovered

D4263	Bone replacement graft - retained natural tooth- first site in quadrant.
D4264	Bone replacement graft - retained natural tooth- each additional site in quadrant.
D4265	Biologic materials to aid in soft and osseous tissue regeneration, per site.
D4266	Guided tissue regeneration - resorbable barrier, per site.
D4267	Guided tissue regeneration - non-resorbable barrier, per site.
D4286	Removal of non-resorbable barrier.
D6103	Bone graft for repair of peri-implant defect - does not include flap entry and closure.
D7295	Harvest of bone for use in autogenous grafting procedure.
D7921	Collection and application of autologous blood concentrate product.

inv-05: Minimum pocket depth after initial therapy

Minimum required pocket depth>= 5 mm (post-initial therapy, 6-point periodontal chart)

Chart timingMust be current and dated within 12 months

Chart type6-point periodontal charting (post-initial therapy)

PurposeDemonstrates clinical need for bone grafting by documenting pocket depths consistent with vertical bone defects

inv-06: Recency of radiographs and periodontal charting

Maximum age for radiographs and periodontal chartingWithin 12 months

Required radiographsDiagnostic-quality, properly oriented, dated pretreatment radiographic images demonstrating vertical bone defects

Required chartingCurrent (within 12 months), dated post-initial therapy 6-point periodontal charting following ADA reporting guidelines

Additional supportive imagingCBCT, photos, narrative and chart notes may be considered

inv-07: Healing interval after initial periodontal therapy

Minimum healing interval after initial periodontal therapyMinimum 4 weeks prior to surgical bone grafting

Purpose of intervalAllows tissues to heal and permits assessment of success or failure of non-surgical therapy (e.g., scaling and root planing)

Requirement contextCompletion of initial periodontal therapy is required before surgical treatment for bone grafting

Provider Requirements, Prior Authorization, and Documentation

Prior Authorization

Prior Authorization Required

Prior authorization is required for bone graft procedure codes. Submit a complete prior authorization request before performing the service to ensure benefit determination and avoid claim denials.

Include all required clinical documentation listed below with the prior authorization submission.
Failure to obtain prior authorization may result in denial or delayed payment.

Documentation Required

Required Documentation for Submission

Submissions must include recent, dated radiographic images, a letter of rationale explaining the necessity of the bone graft and whether it is related to another service, a recent patient health history, and a recent dated periodontal chart (within 12 months) following ADA reporting guidelines.

Current (within 12 months) pretreatment diagnostic-quality, properly oriented radiographs demonstrating vertical bone defects (CBCT when applicable).
Current (within 12 months), dated post-initial therapy 6‑point periodontal charting indicating minimum pocket depth of 5 mm.
Photographs, narrative chart notes, and a letter of rationale describing necessity and relation to other services.

Denial Risk

Denial Risk for Insufficient Documentation

Missing, incomplete, or insufficient clinical documentation may result in denial of the bone graft claim. Common deficiencies include lack of dated radiographs, absence of periodontal charting within 12 months, no letter of rationale, or documentation showing the primary procedure is non-covered.

Bone grafts performed with a non-covered primary procedure (including adjunctive procedures related to non-covered services) are not benefits and are subject to denial.
Bone grafts performed in conjunction with soft tissue grafting are not considered for benefits.
If initial periodontal therapy (e.g., scaling and root planing) was not completed with a minimum four-week healing interval prior to surgery, benefits may be denied.

Background

Periodontal bone grafting is a surgical procedure that places graft material (autograft, allograft, or alloplastic) into an area of bone loss to restore or regenerate alveolar bone lost from periodontal disease. These procedures are typically directed at narrow, vertical, multi-walled defects or Class II furcation defects where regeneration is more likely to succeed; by contrast, wide horizontal interproximal defects have limited positive outcomes. Bone grafting may be performed for retained natural teeth or peri-implant defects and is intended to provide a scaffold for new bone formation and support of the dentition or implant.

Definitions

inv-14: Class II furcation defect

DefinitionLoss of bone between the roots of a multirooted tooth (typically molars) where the defect extends into the furcation area

Clinical classificationClass II furcation: vertical loss of bone into the furcation that may be appropriate for periodontal bone grafting

Typical treatment indicationBone grafting may be appropriate for Class II furcation defects as part of periodontal/peri-implant defect management

Prognostic noteClass II furcations are specifically listed as defect types generally suitable for grafting; wide horizontal interproximal defects are less suitable