CPT® Code 33750

The procedure described by CPT® Code 33750 involves the creation of a shunt that connects the subclavian artery to the pulmonary artery, commonly known as the Blalock-Taussig operation. This surgical intervention is primarily indicated for patients experiencing cyanosis due to congenital heart defects, such as tetralogy of Fallot. The Blalock-Taussig shunt serves as a temporary solution to improve oxygenation by redirecting blood flow from the systemic circulation to the pulmonary circulation, thereby alleviating symptoms associated with inadequate oxygen delivery to the body. The operation is classified as a closed heart procedure, which means it does not require opening the heart itself but rather involves accessing the heart's associated blood vessels through an incision in the chest wall. The procedure is performed through a posterolateral incision at the fourth intercostal space, allowing the surgeon to expose the heart and major blood vessels while retracting the apex of the lung. This approach facilitates the necessary surgical steps to either directly connect the subclavian artery to the pulmonary artery or to utilize a synthetic graft for the shunt, depending on the specific clinical scenario and anatomical considerations.