CPT 21812 Open Rib Fixation — Reimbursement Benchmarks

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.

Billing Code Overview

CPT code 21812 describes open surgical repair of multiple rib fractures with internal fixation, typically addressing four to six ribs. The procedure may include a thoracoscopy for improved visualization during the operation. This service is surgical trauma care focused on stabilization of the chest wall after blunt or penetrating injury.

Service type: Open thoracic surgical fixation of rib fractures with possible thoracoscopic assistance
Typical site of service: Hospital operating room or inpatient surgical suite with thoracic surgery capability

Clinical Context

A 62-year-old male presents to the emergency department after a motor vehicle collision with severe left-sided chest pain, respiratory distress, and visible chest wall deformity. Imaging (chest X-ray and CT scan) demonstrates multiple displaced fractures of ribs 4 through 7 with flail chest physiology and associated hemothorax. The trauma surgery team determines the patient requires operative stabilization of the ribs. The patient is taken to the operating room under general anesthesia. The procedure includes an open reduction and internal fixation of four ribs using plates and screws; a video-assisted thoracoscopic inspection is performed for visualization and evacuation of retained hemothorax. Postoperative care includes chest tube management, analgesia (including multimodal and regional anesthesia as appropriate), respiratory therapy, and monitoring in a step-down or ICU setting depending on respiratory status. Documentation should include operative report describing ribs treated, approach, fixation devices used, thoracoscopic assistance if performed, laterality (LT or RT), estimated blood loss, and any concurrent procedures such as chest tube placement or management of intrathoracic injuries.

Coding Specifications

Modifier	Description	When to Use
`RT`	Right side	Use when the procedure is performed on the right hemithorax/ribs.

Taxonomy Code	Specialty	Notes
207RH0000X	Thoracic Surgery	Primary specialty performing rib fixation and intrathoracic management.
207XS0101X	General Surgery	Trauma/general surgeons frequently perform rib fixation in acute care settings.
2080S0120X	Surgery - Trauma	Trauma surgeons with operative fixation expertise.
207K00000X	Orthopedic Surgery	Orthopedic trauma surgeons may perform chest wall fixation in some centers.
2084S0121X	Critical Care Medicine	Intensivists manage perioperative critical care but do not bill for the surgical procedure.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S22.41XA`	Multiple fractures of ribs, left side, initial encounter for closed fracture	Common indication for open reduction and internal fixation of left-sided multiple rib fractures.
`S22.42XA`	Multiple fractures of ribs, right side, initial encounter for closed fracture	Common indication for fixation on the right hemithorax.
`S27.3XXA`	Hemothorax, initial encounter	Hemothorax often accompanies displaced rib fractures and may be managed with chest tube or evacuated during surgery.
`S27.0XXA`	Traumatic pneumothorax, initial encounter	Pneumothorax can occur with rib fractures and may necessitate thoracostomy and inspection during fixation.
`S22.5XXA`	Fracture of sternum, initial encounter for closed fracture	Associated chest wall injuries that may be addressed in the same operative setting or affect surgical planning.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`32551`	Tube thoracostomy, includes connection to water seal drainage, when performed (e.g., for hemothorax or pneumothorax)	Often placed preoperatively or intraoperatively for drainage of hemothorax/pneumothorax associated with rib fractures.
`32605`	Thoracotomy and repair of lung, separate procedure	May be required if there is intrathoracic injury (lung laceration) identified during thoracoscopy or open thoracotomy.
`32666`	Thoracoscopy, surgical; with decortication (separate procedure)	May be performed if there is organized hemothorax requiring decortication in conjunction with rib fixation.
`76000`	Fluoroscopy (separate procedure), first image	Intraoperative imaging/fluoroscopy may be used to assist plate placement or confirm hardware position.
`99223`	Initial hospital care, typically 70 minutes or more	Appropriate for admission and complex preoperative/surgical evaluation in an inpatient setting.

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Summary & Overview

CPT 21812: Open Fixation of Multiple Rib Fractures