Summary & Overview
CPT 33681: Ventricular Septal Defect Repair With Patch or Sutures
CPT code 33681 represents surgical closure of a ventricular septal defect (VSD) using a patch or sutures to prevent mixing of oxygenated and deoxygenated blood. This open cardiac repair is a core procedure in congenital and acquired structural heart disease management and has implications for hospital operative capacity, perioperative care protocols, and inpatient reimbursement. Nationally, VSD repair remains clinically significant due to its role in restoring effective cardiac circulation and preventing long-term complications such as heart failure, pulmonary hypertension, and endocarditis.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a concise overview of clinical context, coding and billing considerations associated with CPT code 33681, and typical sites of service.
Readers will learn the clinical intent of the code, expected service setting, common modifiers and billing practice notes where available, and a summary of payer coverage landscape and policy considerations relevant to hospitals and surgical teams. Data not available in the input will be noted where applicable. This summary is intended for national audiences including hospital administrators, cardiac surgeons, coding professionals, and payers interested in structural heart procedure coding and policy.
Billing Code Overview
CPT code 33681 describes surgical repair of a ventricular septal defect by closing a hole in the septum between the heart's ventricles using a patch or sutures. This procedure restores separation between oxygenated and deoxygenated blood within the heart chambers.
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Service type: Cardiac surgical intervention for structural heart defect repair
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Typical site of service: Inpatient hospital operating room (cardiac surgery suite)
Clinical & Coding Specifications
Clinical Context
A typical patient is an infant or child diagnosed with a congenital ventricular septal defect (VSD) causing significant left-to-right shunt, failure to thrive, recurrent respiratory infections, or pulmonary hypertension. The patient is evaluated by pediatric cardiology with transthoracic echocardiography confirming the VSD size and location and estimating pulmonary pressures. Preoperative workup includes chest radiograph, ECG, lab studies, and often cardiac catheterization to define anatomy and pulmonary vascular resistance.
Surgical workflow: the patient is taken to the operating room for general endotracheal anesthesia. A median sternotomy is performed and cardiopulmonary bypass is instituted. The heart is arrested with cardioplegia and the defect in the interventricular septum is exposed either via right atriotomy/tricuspid valve annuloplasty approach or directly via ventriculotomy depending on defect location. The surgeon closes the septal defect with a patch (e.g., pericardial or synthetic) or direct suturing. The repair is tested for residual shunt, the heart is de-aired, function is assessed, bypass is weaned, and the chest is closed. Postoperative care occurs in the pediatric cardiac intensive care unit with hemodynamic monitoring, ventilatory support as needed, and follow-up echocardiography prior to discharge.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Modifier not otherwise specified (placeholder) | Data not available in the input. |