CPT® Code 33726

Pulmonary venous stenosis refers to a condition where the blood flow from the lungs to the heart is restricted due to narrowing of the pulmonary veins. This condition can either be a congenital defect present at birth or may develop after surgical repair of anomalous pulmonary vein connections. The repair of pulmonary venous stenosis, as described by CPT® Code 33726, involves the use of living autologous atrial tissue or a sutureless neoatrium technique. The procedure is performed under cardiopulmonary bypass after a sternotomy, which allows access to the heart. The surgical approach varies depending on whether the patient is undergoing an initial repair or a subsequent procedure following previous repairs. In cases of initial repair, the left atrium is accessed, while for patients who have had prior repairs, access is typically through the right atrium. The surgical technique includes incising the common pulmonary vein and extending the incision into each pulmonary vein to adequately address the stenotic area while preserving the adventitia. The repair technique is designed to control pulmonary venous bleeding into the left atrium without directly suturing the veins, which is critical for maintaining proper blood flow and minimizing complications.