CPT 33863 Aortic Root Replacement Reimbursement | OpenPayer

Summary & Overview

CPT 33863: Aortic Root and Proximal Ascending Aorta Replacement with Valve Conduit

CPT code 33863 represents a complex cardiothoracic surgery: replacement of the aortic root and proximal ascending aorta with a tube graft that incorporates a prosthetic valve, including reimplantation of the coronary arteries and initiation of cardiopulmonary bypass. This code captures high-complexity, high-resource procedures that are central to management of thoracic aortic aneurysms with root involvement and valvular pathology. Nationally, these operations are significant for surgical quality, perioperative risk management, and hospital resource utilization.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find clinical context for when this procedure is reported, the typical inpatient surgical setting, and the role of cardiopulmonary bypass in the operative conduct. The publication provides benchmarks commonly used in payer adjudication and facility planning, highlights policy and coverage considerations relevant to major national payers, and outlines coding relationships and clinical indications that drive billing and claims decisions. Data not available in the input is noted where applicable. This summary is intended to inform clinicians, coding professionals, and administrators about the clinical scope and payer landscape associated with CPT code 33863.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare33863CPTCardiothoracic SurgeryAortic Root ReplacementCardiopulmonary BypassThoracic Aortic AneurysmValve ConduitInpatient Surgery

Billing Code Overview

CPT code 33863 describes a surgical repair of a thoracic aortic aneurysm involving replacement of the aortic root and proximal ascending aorta with a tube graft that contains a prosthetic valve, with reimplantation of the coronary arteries into the graft. The procedure includes initiation of cardiopulmonary bypass during the operation.

Service type: Invasive cardiothoracic surgical procedure (complex aortic root and ascending aorta replacement with valve conduit and coronary reimplantation)
Typical site of service: Inpatient hospital operating room with cardiothoracic surgical team and cardiopulmonary bypass capability

Clinical & Coding Specifications

Clinical Context

A 68-year-old male with a known ascending thoracic aortic aneurysm involving the aortic root presents with progressive aortic root dilation, worsening aortic regurgitation, and exertional dyspnea. Imaging with contrast CT angiography demonstrates a root and proximal ascending aortic aneurysm with involvement of the aortic valve, and coronary ostia are intact but require reimplantation during root replacement. The cardiothoracic surgery team schedules an elective combined aortic root and valve replacement using a composite valve graft (Bentall-type procedure). The patient is evaluated preoperatively in the hospital or ambulatory surgical setting with cardiology and anesthesia assessments, consented for cardiopulmonary bypass, and undergoes median sternotomy in the operating room. Intraoperatively the team initiates cardiopulmonary bypass, excises the native aortic root and valve, implants a tube graft containing a prosthetic valve, and reimplants both coronary arteries into the graft. Postoperative care occurs in the cardiac intensive care unit with hemodynamic monitoring, anticoagulation management when indicated, and follow-up imaging and outpatient cardiology visits for valve and graft surveillance.

Coding Specifications

Modifier	Description	When to Use
`62`	Two surgeons	Use when two surgeons of different specialties operate together with distinct, documented roles.

CPT 33866: Aortic Arch Graft Placement with Circulatory Arrest

CPT-33864-AORTIC-ROOT-AND-ASCENDING-AORTA-REPLACEMENT-WITH-VALVED-GRAFT

CPT 33864: Aortic Root and Proximal Ascending Aorta Replacement with Valved Graft

CPT-33871-AORTIC-ARCH-REPAIR-SYNTHETIC-GRAFT-CEREBRAL-ISOLATION

CPT 33871: Aortic Arch Repair with Synthetic Graft and Cerebral Isolation

CPT-33858-AORTIC-DISSECTION-REPAIR-WITH-GRAFT-AND-CARDIOPULMONARY-BYPASS

CPT 33858: Aortic Dissection Repair with Graft and Cardiopulmonary Bypass

CPT-33875-DESCENDING-THORACIC-AORTA-REPLACEMENT-GRAFT

CPT 33875: Descending Thoracic Aorta Replacement with Graft

CPT-33859-ASCENDING-AORTIC-ANEURYSM-REPAIR-WITH-GRAFT-BYPASS

CPT 33859: Ascending Aortic Aneurysm Repair with Graft and Bypass

CPT-33877-THORACOABDOMINAL-AORTIC-REPAIR-WITH-GRAFT

CPT 33877: Thoracoabdominal Aortic Repair with Graft

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Taxonomy Code	Specialty	Notes
208E00000X	Cardiovascular Thoracic Surgery	Primary specialty for aortic root replacement procedures.
207P00000X	Cardiac Surgery	Surgeons focusing on operative management of cardiac and great vessel disease.
207RG0300X	Vascular Surgery	May perform complex ascending aortic or arch procedures in combined teams.
207L00000X	Interventional Cardiology	Involved in preoperative planning and postoperative management but not operative lead.
2080P0004X	Cardiac Transplant Surgery	May be involved in complex reoperative root procedures or multidisciplinary teams.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I71.2`	Thoracic aortic aneurysm, ruptured	Indicates emergent root/ascending repair when rupture is present.
`I71.1`	Thoracic aortic aneurysm, without rupture	Common indication for elective aortic root and ascending aorta replacement.
`I35.1`	Nonrheumatic aortic (valve) stenosis	Valve pathology that may coexist and necessitate valve replacement within the graft.
`I35.0`	Nonrheumatic aortic (valve) insufficiency	Aortic regurgitation often accompanies root aneurysm prompting composite graft with prosthetic valve.
`I77.9`	Disorder of arteries, unspecified	Captures complex aortic pathology when a more specific code is not available.
`Z95.2`	Presence of prosthetic heart valve	Relevant for history and future management after prosthetic valve implantation.
`I74.9`	Embolism and thrombosis of unspecified artery	Potential perioperative complication relevant to documentation and postoperative care.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`33405`	Aortic valve repair or replacement with cardiopulmonary bypass	Alternative or adjunct when isolated aortic valve replacement is performed without root replacement; related when valve pathology is primary.
`33860`	Replacement of ascending aorta, with cardiopulmonary bypass, with cardioplegia, with graft (separate from root replacement)	Related for procedures involving the ascending aorta proximal to or extending beyond the root; may be performed in staged or combined fashion.
`33361`	Coronary artery bypass, with cardiopulmonary bypass (single vessel)	May be performed concurrently if coronary artery bypass grafting is required at the time of root replacement.
`92973`	Percutaneous transluminal coronary angioplasty during the same hospitalization	May be performed pre- or postoperatively for coronary disease management when reimplantation is not feasible.
`99291`	Critical care, evaluation and management of the critically ill patient; first 30–74 minutes	Represents postoperative ICU critical care services commonly billed following complex aortic root replacement.

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