Summary & Overview
CPT 21193: Mandibular Ramus Reconstruction
CPT code 21193 denotes surgical reconstruction of the perpendicular portions (rami) of the mandible to correct facial deformities, commonly performed after traumatic injury. This code captures complex maxillofacial reconstructive work that impacts functional outcomes such as occlusion, mastication, and facial symmetry, making it clinically and financially significant across surgical specialties that manage facial trauma and congenital or acquired deformities. Key national payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise synthesis of what this code represents, the typical clinical context and sites of service, and the elements relevant to billing and coverage reviews. The publication outlines benchmarking expectations, common payer coverage patterns, and policy considerations that influence prior authorization and medical necessity determinations. It also provides clinical context to help payers and providers align documentation with procedural intent. Data not available in the input is noted where applicable; this summary focuses on national relevance rather than state-specific rules.
Billing Code Overview
CPT code 21193 describes surgical reconstruction of the perpendicular portions (rami) of the mandible to correct facial deformities, often resulting from trauma. This procedure addresses structural deformities of the lower jaw by reshaping or reconstructing the mandibular rami to restore facial form and function.
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Service type: Reconstructive maxillofacial surgery
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Typical site of service: Inpatient or outpatient surgical settings, including hospital operating rooms and ambulatory surgical centers
Clinical & Coding Specifications
Clinical Context
A 34-year-old male presents after motor vehicle collision with bilateral mandibular ramus fractures causing malocclusion, facial asymmetry, and limited mouth opening. After initial emergency evaluation, CT facial bones confirm displaced fractures of the perpendicular portions (rami) of the mandible. The patient is optimized medically, consented for surgical reconstruction, and scheduled for open reduction and internal fixation of the mandibular rami under general anesthesia. The clinical workflow includes preoperative imaging review, dental occlusion assessment by oral and maxillofacial surgery, intraoperative open reduction of fractures with plate and screw fixation, intraoperative dental arch alignment or intermaxillary fixation as needed, immediate postoperative radiographs, and routine postoperative wound checks and oral function assessment. Typical postoperative care includes antibiotic prophylaxis, pain management, diet modification, and follow-up visits for hardware assessment and occlusion verification.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when intraoperative complexity substantially increases operative time or effort beyond usual for 21193 (document justification). |