Summary & Overview
CPT 33853: Aortic Arch Repair With Graft and Cardiopulmonary Bypass
CPT code 33853 captures open surgical reconstruction of an incompletely developed or disrupted aortic arch using autogenous or prosthetic graft material performed with cardiopulmonary bypass. This complex cardiothoracic procedure is clinically significant because it addresses congenital or acquired aortic arch pathology that can be life‑threatening and typically requires multidisciplinary perioperative care and specialized surgical expertise. Nationally, reimbursement and coverage policies for high-complexity cardiac procedures influence access, center volume, and care pathways.
Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical scope and site of service for CPT code 33853, common billing modifiers and coding context, and a summary of how major payers and Medicare approach coverage and claims processing for high-complexity aortic arch repairs. The publication also outlines typical documentation elements, expected service lines, and considerations for medical necessity and inpatient setting determinations.
This summary provides clinicians, billing staff, and policy analysts with concise context about the procedure, payer coverage landscape, and areas where policy or documentation clarity can affect claims and access to specialized surgical care.
Billing Code Overview
CPT code 33853 describes surgical repair of an incompletely developed or disrupted aortic arch using either an autogenous graft or prosthetic material. The procedure is performed with cardiopulmonary bypass.
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Service type: Open cardiac surgical repair of the aortic arch using graft material with cardiopulmonary bypass
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Typical site of service: Inpatient hospital operating room, often within cardiothoracic surgery or pediatric cardiac surgery programs
Clinical & Coding Specifications
Clinical Context
A typical patient is an infant or young child diagnosed with a congenital aortic arch abnormality such as interrupted aortic arch or a severely hypoplastic aortic arch presenting with differential cyanosis, diminished femoral pulses, heart failure, or poor perfusion. The patient is evaluated by pediatric cardiology and cardiothoracic surgery with echocardiography and cross-sectional imaging (CT or MRI) confirming arch disruption or significant underdevelopment requiring surgical reconstruction. Preoperative workflow includes stabilization in the neonatal intensive care unit, prostaglandin E1 infusion if ductal-dependent, multidisciplinary discussion, informed consent, and preoperative labs and blood typing. In the operating room, the cardiothoracic surgeon performs arch repair using autogenous tissue or prosthetic graft with institution of cardiopulmonary bypass. Intraoperative monitoring includes arterial lines in right radial and femoral arteries, transesophageal echocardiography, and neuromonitoring as indicated. Postoperative care involves intensive care monitoring for hemodynamics, ventilation management, anticoagulation considerations if prosthetic material used, and surveillance imaging and echocardiography prior to discharge.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
62 | Two surgeons | Use when two surgeons collaborate and each performs distinct portions of the repair requiring documentation of separate surgical work. |