CPT® Code 33261

The procedure described by CPT® Code 33261 involves the operative ablation of a ventricular arrhythmogenic focus, which is a specific site within the ventricles of the heart that generates abnormal electrical signals leading to ventricular tachycardia. This condition can result in rapid heartbeats that may compromise the heart's ability to pump blood effectively. The procedure is performed using cardiopulmonary bypass, a technique that temporarily takes over the function of the heart and lungs during surgery, allowing the surgeon to operate on a still and bloodless field. Access to the heart is achieved through a midline sternotomy, which involves making an incision along the sternum to provide direct access to the thoracic cavity. During the procedure, both epicardial and endocardial electrodes are placed on the heart to facilitate pacing and mapping, which are essential for accurately locating the arrhythmogenic focus. This mapping process helps identify the specific area responsible for the abnormal electrical activity. Once the focus is localized, cardiopulmonary bypass is established, and cardioplegic arrest is initiated to protect the heart muscle during the surgical intervention. The surgeon then makes an incision over the identified arrhythmogenic focus, where the abnormal electrical conduction pathway is either interrupted through surgical incision or destroyed using techniques such as cryoablation or radiofrequency ablation. After the ablation is completed, the heart incision is closed, and the cardiopulmonary bypass is discontinued. Finally, chest tubes may be placed as necessary to drain any fluid or air, and the chest incision is closed to complete the procedure.