Summary & Overview
CPT 33496: Prosthetic Valve Repair on Cardiopulmonary Bypass
CPT code 33496 represents an open cardiac surgical procedure to repair a dysfunctional or leaking prosthetic heart valve while the patient is supported on cardiopulmonary bypass. This code captures complex intraoperative management of prosthetic valve dysfunction due to tissue overgrowth or exudative material impairing valve function. Nationally, accurate coding for these high-acuity cardiac surgeries affects case mix classification, hospital billing, and clinical quality measurement for valvular interventions.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage considerations, common modifiers, and the clinical context for using 33496 in surgical coding workflows.
Readers will learn the clinical intent of the code, typical site and service setting, and the administrative context for reporting this complex cardiac repair. The summary provides benchmarks and policy-relevant points where available, highlights common documentation elements tied to prosthetic valve repair on bypass, and notes when input data was not provided. Data not available in the input is indicated where applicable.
Billing Code Overview
CPT code 33496 describes a surgical repair of a dysfunctional or leaking prosthetic heart valve performed while the patient is on cardiopulmonary bypass. The procedure addresses valve malfunction caused by overgrowth of vascular structures or exudate affecting the prosthetic valve.
Service Type: Cardiac surgical procedure — prosthetic valve repair on cardiopulmonary bypass
Typical Site of Service: Inpatient operating room or cardiac surgical suite (hospital-based)
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with a prior mechanical aortic valve prosthesis presents with progressive heart failure symptoms and new systolic murmurs. Transthoracic and transesophageal echocardiography demonstrate prosthetic valve dysfunction with obstructive pannus formation and vegetative exudate causing restricted leaflet motion and moderate-to-severe regurgitation. The cardiac surgery team schedules an open procedural intervention with the patient placed on cardiopulmonary bypass to perform debridement and repair of the dysfunctional prosthetic valve. Intraoperative transesophageal echocardiography is used for guidance, and the operative workflow includes median sternotomy, institution of cardiopulmonary bypass, excision of overgrown tissue and exudate from the prosthesis, assessment of valve function, and repair or partial reconstruction of the prosthetic apparatus. Postoperative care includes intensive monitoring in the cardiac surgical unit, anticoagulation management for mechanical prostheses, and follow-up echocardiography to confirm valve competence.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Procedure furnished in whole or in part by the primary payer | Rare administrative use when primary payer performed part of service |
11 |