Summary & Overview
CPT 21246: Reconstruction of Maxilla or Mandible with Metal Plate
CPT code 21246 represents major reconstructive surgery of the entire maxilla or mandible with application of a metal plate to restore form and function of the upper or lower jaw. Nationally, this procedure is clinically significant because it addresses severe jaw defects from trauma, tumor resection, congenital deformity, or infection that disrupt mastication, articulation, and facial structure. Accurate coding supports surgical care coordination and appropriate facility and surgeon reimbursement for high-complexity procedures.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for 21246, typical settings of care, common modifiers and operational considerations, and where available, payer coverage patterns and administrative notes. The publication also outlines benchmarking elements relevant to hospital and surgical practice administrators, highlights documentation elements that support medical necessity, and summarizes coding relationships to related reconstructive procedures. Data not available in the input is noted where applicable. This national-level summary is intended to inform coding, billing, and clinical documentation practices for complex maxillofacial reconstruction.
Billing Code Overview
CPT code 21246 describes reconstruction of the entire maxilla or mandible (the upper or lower jaw) with application of a metal plate to the superior aspect of the jaw bone to repair defects that impair jaw function. This procedure addresses extensive bony defects of the jaw that compromise chewing, speech, or structural integrity.
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Service type: Major reconstructive maxillofacial surgery
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Typical site of service: Inpatient hospital or specialized ambulatory surgical center where complex maxillofacial reconstruction and postoperative monitoring are provided.
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient presents with a large destructive maxillary tumor resulting in loss of alveolar bone and oral function, including impaired mastication and speech. The patient previously underwent tumor resection with segmental maxillectomy and now requires reconstruction of the entire maxilla to restore structural integrity and function. Preoperative workflow includes imaging with CT facial bones, dental and occlusal assessment, oncology and reconstructive surgery consultations, anesthesia evaluation, and medical optimization. In the operating room, a maxillofacial surgeon performs reconstruction of the entire maxilla with contouring and placement of a rigid fixation metal plate (reconstruction plate) secured to the remaining jaw bone. Intraoperative steps include debridement of devitalized bone, shaping and fixation of the plate to restore arch form, possible bone graft or free flap integration, intraoperative imaging to confirm hardware position, and placement of drains as needed. Postoperative workflow includes inpatient monitoring for airway and bleeding, pain control, antibiotics, wound care, evaluation by speech and swallow therapy, and staged dental rehabilitation. Typical site of service is an inpatient hospital operating room or an ambulatory surgical center with capability for complex craniofacial procedures depending on case complexity and comorbidities.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Chief surgeon | Use to indicate the performing practitioner as the primary surgeon during reconstruction. |