CPT® Code 33853

The procedure described by CPT® Code 33853 involves the surgical repair of a hypoplastic or interrupted aortic arch, utilizing either autogenous (from the patient's own body) or prosthetic (artificial) materials. A hypoplastic aortic arch, also known as diffuse long-segment coarctation, is characterized by a narrowing of the aorta that affects the entire arch, which can lead to significant cardiovascular complications. An interrupted aortic arch, on the other hand, refers to a complete absence of a segment of the aortic arch, resulting in a critical disruption of blood flow. Both conditions may coexist with other congenital heart defects, such as ventricular septal defect (VSD), patent ductus arteriosus (PDA), aortopulmonary window, and truncus arteriosus, necessitating careful surgical intervention. The surgical approach typically involves a posterolateral incision to gain access to the aortic arch, followed by mobilization of the ascending aorta, aortic arch, and its branches, as well as the ductus arteriosus and descending aorta. During the procedure, special attention is given to protecting vital structures, including the recurrent laryngeal and phrenic nerves, and controlling lymphatic vessels. The repair can be performed with or without cardiopulmonary bypass, depending on the specific clinical scenario, and involves techniques such as patch aortoplasty or the use of grafts to restore normal aortic continuity.