CPT® Code 43520

The CPT® Code 43520 refers to a surgical procedure known as pyloromyotomy, specifically the Fredet-Ramstedt type operation. This procedure is primarily indicated for the treatment of congenital hypertrophic pyloric stenosis, a condition that typically manifests in infants during the neonatal period. In this condition, the pylorus, which is the opening from the stomach into the small intestine, becomes abnormally thickened, leading to gastric outlet obstruction. The pyloromyotomy involves a careful surgical approach to relieve this obstruction by cutting the pyloric muscle without damaging the inner lining of the stomach (mucosa). The procedure is performed through a right upper abdominal incision, allowing access to the pylorus and surrounding structures. The goal of the surgery is to create a larger opening at the pyloric junction, facilitating the passage of food from the stomach into the intestine, thereby alleviating the symptoms associated with this condition.