Summary & Overview
CPT 21395: Orbital Floor Repair with Autologous Bone Graft
CPT code 21395 describes surgical repair of the orbital floor following a blowout fracture, using the patient’s own bone graft to reconstruct bony defects. This procedure is clinically important for restoring orbital anatomy, preventing enophthalmos and diplopia, and addressing functional and cosmetic sequelae of blunt facial trauma. Nationally, 21395 is relevant across trauma, plastic surgery, and otolaryngology practices where orbital fractures require reconstructive intervention.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clinical and billing-focused overview of the procedure, typical sites of service and service type, common modifiers associated with surgical coding, and the context needed to interpret coverage and reimbursement discussions. The publication highlights benchmarks and common payer practices where available, summarizes clinical indications and operative approach, and outlines the administrative elements that commonly affect claims processing for orbital floor reconstruction.
This executive summary provides a concise reference for clinicians, coding professionals, and policy analysts seeking a national-level synthesis of clinical context and coding implications for CPT code 21395.
Billing Code Overview
CPT code 21395 describes surgical repair of the orbital floor (the bony structure that supports the eye) after a blowout fracture caused by blunt force trauma. The procedure involves a skin incision directly over the fracture site to access the orbital floor and placement of autologous bone graft material taken from the patient to fill and reconstruct bony defects, with the aim of restoring facial form and orbital function.
-
Service type: Surgical repair of orbital floor with autologous bone grafting
-
Typical site of service: Inpatient or outpatient hospital operating room or ambulatory surgery center, depending on clinical severity and surgeon decision
Clinical & Coding Specifications
Clinical Context
A thirty-four-year-old male presents to the emergency department after an altercation with blunt facial trauma to the left orbit. He reports immediate periorbital swelling, diplopia on upward gaze, and subjective enophthalmos. Physical exam demonstrates infraorbital rim tenderness, limitation of upward gaze consistent with inferior rectus entrapment, and periorbital ecchymosis. CT of the orbits confirms a left orbital floor (blowout) fracture with a 6–8 mm defect and herniation of orbital fat into the maxillary sinus.
The patient is taken to the operating room for open repair of the orbital floor under general anesthesia. The oculoplastic/orbital surgeon makes a transconjunctival or subciliary skin incision to access the orbit, reduces entrapped tissue, and harvests autologous bone graft material (commonly from the calvarium or iliac crest) to reconstruct the bony floor and fill the defect. Intraoperative forced duction testing confirms release of restriction. The wound is closed, postoperative ophthalmologic exams are performed, and the patient is observed for ocular motility, visual acuity, and signs of infection before discharge with follow-up appointments and imaging as needed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work, time, and/or complexity substantially exceed typical for 21395 (document rationale). |