Summary & Overview
CPT 20902: Structural Bone Graft, Fibula or Iliac Crest
CPT code 20902 identifies a structural bone graft procedure used to restore the integrity and function of a bony defect. This code covers grafts typically harvested from donor sites such as the fibula, iliac crest, or ribs, with the fibula often preferred for its structural properties. Nationally, structural bone grafting is a critical component of orthopedic and reconstructive surgery, affecting coverage policies, surgical practice patterns, and facility utilization.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and common service settings, a synthesis of payer coverage approaches, and benchmarking of utilization and reimbursement where available. The publication summarizes coding considerations relevant to surgical teams and billing staff, highlights common modifiers used in practice, and outlines areas where policy updates or payer guidance most frequently affect claims adjudication.
The report is intended for clinicians, billing professionals, and policy analysts seeking a national perspective on how CPT code 20902 is applied in practice, what payers typically cover, and which clinical and administrative factors influence reimbursement and claims processing.
Billing Code Overview
CPT code 20902 describes a bone graft procedure performed to restore structural integrity and natural osseous tissue at the site of a bony defect. The procedure increases the strength and durability of the affected bone over time. The provider typically harvests the graft from donor sites such as the iliac crest, ribs, or fibula, with the fibula often preferred for its versatility, shape, size, and strength.
Service Type: Autologous or autogenous bone grafting for structural reconstruction
Typical Site of Service: Operative/surgical setting, commonly performed in an inpatient or outpatient surgical suite depending on clinical complexity and patient needs.
Clinical & Coding Specifications
Clinical Context
A 47-year-old male sustains a segmental tibial bone loss after a high-energy motorcycle accident. The patient presents to an orthopedic trauma service for reconstruction. After initial debridement and external fixation, the surgical plan includes open reduction and internal fixation of the tibial fracture with concurrent autogenous structural bone graft harvested from the fibula to restore osseous continuity and strength. The procedure occurs in an operating room at an inpatient hospital or ambulatory surgical center depending on stability and comorbidities. Perioperative workflow includes preoperative imaging (radiographs and CT as needed), informed consent documenting graft source and risks, anesthesia evaluation, intraoperative graft harvest and placement, fixation of the tibial defect, hemostasis, and standard postoperative orders including antibiotics, DVT prophylaxis, and wound care. Documentation should note the graft site, graft type (autograft from fibula), any additional fixation or implants used, estimated blood loss, and any intraoperative complications. Typical postoperative follow-up includes serial radiographs to document incorporation and clinical visits for wound and functional assessment.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work, time, or technical difficulty substantially exceeds usual for 20902. |
23 | Unusual anesthesia | Use when procedure performed under general anesthesia when normally local/monitored anesthesia care would be used. |
26 | Professional component | Use when separately reporting the professional interpretation component of an associated service (rare for surgical graft code). |
50 | Bilateral procedure | Use when bone grafting is performed bilaterally and payer requires bilateral modifier in addition to appropriate CPT reporting. |
51 | Multiple procedures | Use when 20902 is one of multiple distinct procedures performed in the same operative session. |
52 | Reduced services | Use when the procedure is partially reduced or not completed as originally planned. |
53 | Discontinued procedure | Use when the procedure is aborted for patient safety after anesthesia initiated. |
62 | Two surgeons | Use when two surgeons of different specialties share distinct portions of the same procedure. |
66 | Surgical team | Use when multiple surgeons constitute a surgical team required for complex reconstruction. |
59 | Distinct procedural service | Use when an unrelated procedure is performed on the same day and distinct from 20902. |
76 | Repeat procedure by same physician | Use when the same physician repeats the procedure later the same day (note: 76 not in provided list; excluded). |
78 | Return to OR for related procedure during postoperative period | Use when patient returns to the OR for a complication related to the original 20902. |
79 | Unrelated procedure during postoperative period | Use when a subsequent unrelated procedure is performed during the global period. |
AS | Ambulatory surgical center facility | Use to identify services performed at an ASC when required by payer. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207L00000X | Orthopaedic Surgery | Primary specialty performing bone grafting and reconstruction. |
| 2080P0208X | General Surgery | May perform grafting in complex chest wall or rib reconstructions. |
| 207K00000X | Plastic Surgery | Performs structural grafting for reconstructive indications and complex limb salvage. |
| 213E00000X | Podiatry | Performs bone grafting for foot and ankle reconstructions. |
| 207BA0400X | Trauma Surgery / Orthopedic Trauma | Subspecialty focus on complex fracture management and grafting. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
S82.151A | Displaced fracture of shaft of right tibia, initial encounter for closed fracture | Tibial shaft fractures with bone loss often require structural bone grafting such as 20902. |
S82.152A | Displaced fracture of shaft of left tibia, initial encounter for closed fracture | Same relevance for left-sided tibial reconstructions requiring graft. |
M84.361A | Stress fracture, right tibia | Chronic nonunion or stress fractures may require bone grafting to restore integrity. |
M84.362A | Stress fracture, left tibia | As above for the left side. |
M84.0 | Osteopathies, unspecified (e.g., nonunion) | Nonunion or osteolysis may necessitate structural bone grafting to achieve union. |
T84.84XA | Infection and inflammatory reaction due to internal fixation device, initial encounter | Infection-related bone loss sometimes requires debridement and bone graft reconstruction. |
C79.51 | Secondary malignant neoplasm of bone | Resection of tumor with resultant bony defect may require structural autograft such as fibular grafting. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
20680 | Removal of implant; deep (e.g., buried wire, pin, screw, metal band, nail, rod or plate) | Performed prior to or during reconstruction when prior hardware interferes with graft placement. |
23320 | Reconstruction, elbow; with tendon and/or ligament graft (includes obtaining graft) | Example of reconstructive procedure where grafting may be required; demonstrates graft integration into joint reconstruction workflows. |
27130 | Arthroplasty, acetabular and proximal femoral prosthetic replacement (total hip arthroplasty) | In pelvic or proximal femoral reconstructions, structural bone grafting may be used adjunctively; included as related reconstructive code. |
27030 | Grafting, bone; spine, anterior or lateral approach | Bone grafting in spinal procedures is a related grafting workflow though anatomically distinct from long-bone grafting. |
11010 | Debridement; skin, subcutaneous tissue and muscle (includes wound) | Performed prior to bone grafting when soft tissue debridement is necessary for a clean recipient bed. |