CPT® Code 48520

The procedure described by CPT® Code 48520 involves the internal anastomosis of a pancreatic cyst to the gastrointestinal tract, specifically for the purpose of drainage. A pancreatic cyst is a fluid-filled sac that can develop in the pancreas, and when it becomes symptomatic or poses a risk of complications, surgical intervention may be necessary. The internal anastomosis allows for the cyst to be directly connected to the gastrointestinal tract, facilitating the drainage of its contents. This procedure can be performed through either bilateral subcostal incisions or a midline abdominal incision, depending on the surgeon's preference and the specific anatomy of the patient. During the operation, the cyst is carefully exposed, and fluid is aspirated to confirm that it is indeed a fluid-filled cyst. This aspiration also provides an opportunity to assess the thickness of the cyst wall, which is crucial for determining the appropriate management. A biopsy of the cyst wall is performed to rule out any potential malignancy, ensuring that the cyst is benign before proceeding with the anastomosis. The anastomosis itself is typically made to the posterior wall of the stomach, a procedure known as cystogastrostomy, or to the duodenum, referred to as cystoduodenostomy. This surgical intervention aims to alleviate symptoms and prevent further complications associated with pancreatic cysts.