Summary & Overview
CPT 21346: Repair of Nasomaxillary Complex Fracture with Stabilization
CPT code 21346 covers surgical repair of nasomaxillary complex fractures involving the nasal bones and maxilla, including application of a splint or fixation device to stabilize the repair. This code is clinically significant because facial fractures carry functional and cosmetic consequences and often require coordinated surgical and postoperative care. Nationally, billing and coverage for facial fracture repair influence hospital and surgical center workflows, resource allocation for trauma and maxillofacial services, and payer authorization practices.
Key payers in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and the payer landscape considered in the analysis. The publication summarizes common modifiers and billing considerations, highlights typical claims and service-line placement, and identifies where input data is incomplete.
This report is intended for revenue cycle leaders, surgical service line managers, and policy analysts seeking a clear, national-level briefing on coding and billing implications for nasomaxillary fracture repair. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 21346 describes surgical repair of a nasomaxillary complex fracture. The procedure treats injuries to the nasal bones and the maxilla (upper jaw) to restore facial form and function, and includes application of a splint or other fixation device to stabilize the repair during healing.
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Service type: Open or closed surgical fracture repair with stabilization of the nasomaxillary complex
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Typical site of service: Ambulatory surgical center or inpatient/acute hospital surgical setting
Clinical & Coding Specifications
Clinical Context
A 28-year-old male presents to the emergency department after a motor vehicle collision with facial trauma, nasal deformity, epistaxis, malocclusion, and periorbital swelling. Imaging (facial CT) demonstrates a displaced nasomaxillary complex fracture involving the nasal bones and anterior maxillary buttress with septal deviation. The oral and maxillofacial surgery team evaluates the patient, documents airway status, neurologic exam, and dental occlusion. Under general anesthesia in the operating room, the surgeon performs open reduction and internal fixation of the nasomaxillary complex to restore midface projection and occlusion, applies intranasal and/or external splints or packing to stabilize the nasal framework, and places rigid fixation as indicated. Postoperative care includes monitoring for bleeding, infection prevention, guidance on splint care, and outpatient follow-up for splint removal and functional/esthetic assessment.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased Procedural Services | Use when work required is substantially greater than typical (e.g., extensive comminuted fractures requiring prolonged surgery). |
23 | Unusual Anesthesia |