CPT® Code 33820

The procedure described by CPT® Code 33820 involves the surgical repair of a patent ductus arteriosus (PDA) through ligation. The ductus arteriosus is a vital blood vessel that connects the descending aorta to the left pulmonary artery during fetal development, facilitating proper circulation in utero. Typically, this ductus closes shortly after birth, but in cases of patent ductus arteriosus, it remains open, leading to potential complications such as heart and lung damage due to abnormal blood flow. The surgical approach to repair the PDA is performed via a posterolateral thoracotomy, which allows the surgeon to access the heart and the ductus arteriosus directly. During the procedure, the ductus is either suture ligated, meaning it is tied off to prevent blood flow, or it may be closed using clips. In some instances, the ductus may also be divided after ligation. It is important to note that if the ductus is divided, different CPT codes are applicable based on the patient's age: CPT® Code 33822 is used for patients younger than 18 years, while CPT® Code 33824 is designated for patients aged 18 years or older. This procedure is critical for preventing the adverse effects associated with a persistent patent ductus arteriosus.