Summary & Overview
CPT 21194: Mandibular Ramus Reconstruction with Autologous Bone Graft
CPT code 21194 represents surgical reconstruction of the perpendicular portions (rami) of the mandible using the patient’s own bone graft to correct facial deformities, often due to trauma. This code captures a complex reconstructive facial surgery that has implications for surgical billing, preauthorization practices, and post-operative care coordination nationally. Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will gain a concise clinical and billing context for 21194, including typical sites of service (hospital operating room or outpatient surgical center), common modifiers used by payers, and areas where policy updates or prior authorization practices commonly affect coverage and claims processing. The publication also summarizes benchmarks and payer patterns where available and highlights operational considerations for coding and claim submission. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 21194 describes surgical reconstruction of the perpendicular portions (rami) of the mandible using autologous bone graft to repair facial deformities, commonly after trauma. This procedure involves reshaping and rebuilding the vertical segments of the lower jaw to restore form and function.
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Service type: Surgical reconstruction of mandibular rami using autologous bone graft
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Typical site of service: Hospital operating room or outpatient surgical center
Clinical & Coding Specifications
Clinical Context
A 42-year-old male presents to a tertiary academic maxillofacial surgery clinic with a nonunited, comminuted fracture of the right mandibular ramus secondary to a motor vehicle collision six weeks earlier. After initial stabilization and wound care, the patient demonstrates persistent contour deformity, malocclusion, and bony defect with insufficient native bone for primary fixation. The treating oral and maxillofacial surgeon schedules operative reconstruction using autogenous bone graft harvested from the iliac crest to restore ramus height and continuity, correct facial asymmetry, and reestablish occlusion.
Preoperative workflow includes imaging with CT maxillofacial 3D reconstruction, preoperative anesthesia evaluation, dental/orthodontic assessment for occlusal planning, and informed consent discussing risks of graft harvest. Intraoperative steps include exposure of the mandibular ramus, debridement of nonviable bone, fixation of segments with plates and screws, placement and shaping of the harvested autograft to fill the ramus defect, and layered closure. Postoperative workflow includes short inpatient observation for airway and pain control, radiographic confirmation of graft position, instructions for diet modification and oral hygiene, outpatient follow-up for wound check and removal of sutures, and long-term monitoring for graft incorporation and occlusal stability.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services |