Summary & Overview
CPT 27732: Distal Fibula Growth Plate Fusion to Equalize Leg Length
CPT code 27732 identifies a pediatric orthopedic surgical procedure that fuses the distal fibular growth plates to halt fibular growth and prevent leg-length discrepancy. Nationally, this code is used in cases where progressive fibular overgrowth could produce functional or structural asymmetry between the legs during growth. The procedure is clinically significant because timely intervention can reduce future limb-length inequality and the need for more extensive corrective surgery.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise overview of clinical intent and typical service settings, plus coverage and billing considerations relevant to major national payers. The publication also outlines common modifiers and related billing elements when available, and summarizes what providers and billing staff should expect in claims processing and documentation requirements.
This content provides a national perspective on CPT code 27732, offering clinical context, typical sites of service, payer coverage scope, and the types of benchmarks and policy updates that affect reimbursement and authorization practices.
Billing Code Overview
CPT code 27732 describes a surgical growth plate fusion of the distal fibula (end plates of the lower fibula) performed to interrupt fibular growth. The procedure is performed to stop the fibula from outgrowing the tibia or the contralateral fibula during skeletal growth, with the clinical goal of equalizing leg length as the patient matures.
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Service type: Surgical orthopedic growth plate (physeal) procedure to arrest growth of the distal fibula
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Typical site of service: Hospital operating room or ambulatory surgical center for pediatric orthopedic surgery
Clinical & Coding Specifications
Clinical Context
A typical patient is a skeletally immature child or adolescent with a progressive limb-length discrepancy caused by the distal femur or proximal tibia growing faster than the ipsilateral distal fibula, or with angular deformity risk due to relative overgrowth of the fibula. The patient presents to pediatric orthopedics with measurable limb-length discrepancy on clinical exam and standing radiographs, often with gait asymmetry, shoe-wear discrepancy, or parental concern. After clinical assessment, standing long-leg radiographs and growth prediction are used to determine timing. The provider performs 27732 (fibular epiphysiodesis) as a temporary or permanent arrest of the fibular growth plate (fusion of the distal fibular epiphysis) to equalize expected limb lengths during remaining growth. The workflow includes preoperative counseling, informed consent, perioperative imaging localization of the physis, operative procedure under regional or general anesthesia in an ambulatory surgery center or hospital operating room, postoperative radiographs to confirm physeal arrest, and routine wound checks and periodic limb-length monitoring during growth.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier / standard reporting | Rarely used as an explicit modifier; default reporting when no other modifier applies |