Summary & Overview
CPT 27466: Femur Lengthening by Osteodistraction
CPT code 27466 denotes femoral lengthening via osteodistraction, an orthopedic surgical technique used to correct limb-length discrepancies and related deformities. Nationally, procedures coded with 27466 matter because they involve complex operative care, prolonged rehabilitation, and potential high resource utilization, making coding clarity and payer coverage important for providers and health plans. Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise overview of what 27466 represents clinically and operationally, a summary of typical sites of service, and insights relevant to billing and claims processing. The publication also covers common modifiers and coding considerations, typical clinical contexts for use, and benchmark topics such as utilization patterns and reimbursement themes where available. Policy and coverage factors affecting authorization, medical necessity review, and postoperative care pathways are summarized to provide national context for clinicians, billing professionals, and policy analysts.
Data not available in the input are noted where applicable; the focus remains on clarifying clinical intent, service setting, and the payer landscape for CPT code 27466.
Billing Code Overview
CPT code 27466 describes a surgical procedure to lengthen the femur using osteodistraction, a technique in which the provider gradually separates two segments of the femur so that new bone forms in the gap. This is an orthopedic surgical procedure typically performed to correct limb-length discrepancies, congenital deformities, or posttraumatic shortening.
Service Type: Surgical — Limb Lengthening / Bone Reconstruction
Typical Site of Service: Inpatient or Outpatient Hospital Surgical Setting or Ambulatory Surgery Center, depending on patient complexity and perioperative needs.
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adolescent or adult with femoral length discrepancy, congenital short femur, posttraumatic limb shortening, or sequelae of infection or tumor resection presenting for surgical limb lengthening using distraction osteogenesis. The patient undergoes preoperative evaluation including limb-length measurement, full-length standing radiographs, CT or MRI as indicated, and assessment by orthopedic surgery specializing in pediatric orthopedics or limb reconstruction. The procedure is performed in an operating room or ambulatory surgery center under general or regional anesthesia with intraoperative fluoroscopy. The surgeon performs an osteotomy of the femur and applies an external fixator, intramedullary lengthening nail, or hybrid device, then initiates a controlled distraction protocol postoperatively with serial outpatient visits for radiographic monitoring and adjustment until consolidation. Typical perioperative workflow includes preop consent, anesthesia evaluation, device application, postoperative pain management, discharge planning with physical therapy, and repeated outpatient follow-up for distraction and consolidation phases.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased Procedural Services | Use when the work required is substantially greater than typical for 27466 due to complexity, extensive scarring, or prolonged operative time. |