CPT code 21110 covers the application of an interdental fixation device—such as upper and lower arch bars—used to stabilize the jaws following procedures like maxillary mandibular advancement (MMA) or other jaw repositioning. This code reflects a discrete procedural step in oral and maxillofacial surgery that supports postoperative stability and healing. Nationally, accurate billing and clinical documentation for this code are important for surgical teams, hospital billing departments, and payers managing coverage of orthognathic and reconstructive jaw procedures.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the service, common settings where the procedure is performed, and the payer landscape covered in the analysis. The publication also addresses benchmarks and policy-relevant items that affect coverage and reimbursement coding practices, operational considerations for surgical services, and common billing modifiers used in practice. Where input data is incomplete, the report notes missing elements explicitly as "Data not available in the input." The content is organized to support coding accuracy, payer engagement, and administrative planning for facilities and clinicians involved in jaw stabilization procedures.