CPT code 21812 represents open surgical fixation of multiple rib fractures, often performed after significant thoracic trauma to stabilize four to six ribs and restore chest wall integrity. The procedure can include thoracoscopic assistance for visualization. Nationally, this code matters because it captures resource-intensive thoracic trauma care requiring operating room time, specialized surgical expertise, and inpatient perioperative management.

Key payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical and billing overview, contextual information about typical care settings and the nature of the procedure, and a summary of common modifiers used with surgical trauma codes. The publication also outlines what stakeholders should expect in terms of coding scope and documentation needs, and it highlights areas where policy updates or payer-specific editing rules can affect claim adjudication.

This summary is intended for national audiences including hospital coders, revenue cycle leaders, and clinicians involved in thoracic trauma care who need a clear description of the code, its clinical application, and the contexts in which it is billed. Data not available in the input will be explicitly noted in detailed sections.