CPT 21813 Reimbursement & Policy Benchmarks | OpenPayer

Summary & Overview

CPT 21813: Open Surgical Fixation of Seven or More Rib Fractures

CPT code 21813 denotes open surgical repair of multiple rib fractures with internal fixation of seven or more ribs, frequently employed after blunt or penetrating thoracic trauma. This code matters nationally because definitive surgical stabilization can reduce respiratory complications, shorten hospital stays, and alter downstream resource use for trauma and thoracic surgery populations.

Key payers in national coverage and payment discussions include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for operative rib fixation, typical sites of service (hospital operating room, inpatient stays), and common billing considerations. The publication summarizes benchmark payment patterns, coding and documentation priorities, and policy updates that affect coverage and utilization for complex thoracic reconstruction.

This analysis highlights clinical indications for operative fixation, expected resource intensity for managing extensive rib injuries, and the coding rationale for using CPT code 21813 when seven or more ribs receive internal fixation. Data limitations: Data not available in the input for payer-specific rates, associated taxonomies, and ICD-10 diagnosis codes.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare21813CPTthoracic surgeryrib fracture fixationtrauma surgeryoperative fixationhospital inpatientthoracoscopy

Billing Code Overview

CPT code 21813 describes open surgical treatment of rib fractures, typically performed after thoracic trauma. The procedure may involve internal fixation of seven or more ribs and can include a thoracoscopy for enhanced visualization during the operation.

Service Type: Open thoracic surgical repair with internal fixation

Typical Site of Service: Inpatient or outpatient hospital operating room (thoracic surgery setting)

Clinical & Coding Specifications

Clinical Context

A 48-year-old male presents to the emergency department after a high-speed motor vehicle collision with severe left-sided chest wall pain, respiratory distress, and visible deformity of the rib cage. Imaging (chest X-ray and CT chest) demonstrates multiple displaced left rib fractures spanning ribs 3 through 9 with a flail chest segment and underlying pulmonary contusion. The trauma team and cardiothoracic surgery consult determine that operative fixation is indicated to stabilize the chest wall, improve ventilation, and reduce pain. The patient is scheduled for open reduction and internal fixation of seven or more ribs with possible video-assisted thoracoscopic surgery (VATS) for intra-thoracic assessment and evacuation of hemothorax.

Preoperative workflow includes trauma evaluation, airway and respiratory optimization, informed consent documenting risks and benefits of open rib fixation, and anesthesia assessment (general endotracheal anesthesia). Intraoperative activities include thoracoscopic inspection, open exposure of the fracture segments, contouring and application of rib plates/systems to seven or more ribs, hemostasis, chest tube placement as indicated, and postoperative transfer to a monitored setting for pain control and respiratory support. Postoperative care focuses on ventilatory support as needed, chest physiotherapy, pain management, imaging to confirm hardware position, and monitoring for complications such as pneumothorax, hemothorax, infection, or hardware failure.

Coding Specifications

Modifier	Description	When to Use
`62`

Related Codes

CPT-21820-STERNAL-FRACTURE-MANIPULATION

CPT 21820: Manipulation of Sternal Fracture

CPT-21812-OPEN-RIB-FIXATION-WITH-THORACOSCOPY

CPT 21812: Open Fixation of Multiple Rib Fractures

CPT-21811-RIB-FRACTURE-OPEN-FIXATION

CPT 21811: Open Surgical Fixation of One to Three Rib Fractures

CPT-21825-STERNAL-FRACTURE-OPEN-REPAIR-FIXATION

CPT 21825: Sternal Fracture Repair with Fixation

Taxonomy Code	Specialty	Notes
207L00000X	Thoracic Surgery	Thoracic surgeons frequently perform rib fixation and thoracoscopic assessment.
2080P0207X	General Surgery	Trauma and general surgeons commonly perform open rib fixation in acute trauma.
207K00000X	Orthopedic Surgery	Orthopedic trauma surgeons may be involved in complex chest wall reconstruction.
2084P0800X	Critical Care Medicine	Intensivists manage perioperative critical care and ventilatory support postoperatively.
207R00000X	Cardiothoracic Surgery	Cardiothoracic surgeons perform rib fixation when intrathoracic involvement is significant.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S22.41XA`	Multiple fractures of left ribs, initial encounter for closed fracture	Common indication when multiple displaced left-sided ribs require open fixation.
`S22.42XA`	Multiple fractures of right ribs, initial encounter for closed fracture	Indicates right-sided multiple rib fractures that may require operative fixation.
`S22.39XA`	Fracture of multiple ribs, other, initial encounter for closed fracture	General code for multiple rib fractures when side or specifics differ; may require fixation.
`S27.3XXA`	Traumatic hemothorax, initial encounter	Hemothorax often accompanies rib fractures and may be addressed during the operative procedure.
`S27.1XXA`	Traumatic pneumothorax, initial encounter	Pneumothorax is a common associated injury requiring chest tube placement during fixation.
`S29.011A`	Traumatic rupture of diaphragm, initial encounter	Severe thoracic trauma with diaphragmatic injury may be evaluated or repaired in the same operative setting.
`T79.A11A`	Traumatic compartment syndrome of thorax, initial encounter	Rare but relevant complication prompting surgical intervention and chest wall stabilization.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`11012`	Debridement of extensive chest wall wound; first 20 sq cm or less (large/deep wounds)	May be performed prior to or during open rib fixation if soft tissue debridement is required for wound management.
`32608`	Thoracoscopy, surgical; with diagnostic/therapeutic intervention (eg, evacuation of hemothorax)	VATS is commonly performed in conjunction with open rib fixation for visualization and treatment of intrathoracic injury.
`32551`	Tube thoracostomy, includes connection to drainage system (e.g., chest tube)	Chest tube placement is frequently performed during or after rib fixation for pneumothorax/hemothorax management.
`99223`	Initial hospital care, typically 60 minutes or more	Higher-level inpatient evaluation and management commonly billed for complex postoperative care after major thoracic fixation.
`27635`	Open treatment of distal fibula fracture, with or without internal fixation	Not related — Data not available in the input.

Note: If a related CPT code list was not provided in the input, common adjunctive codes were selected based on clinical workflow for open rib fixation with thoracoscopic assistance.