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CPT 47721: Biliary and Gastric Bypass (Anastomoses)
CPT code 47721 represents a complex operative procedure that creates a connection between the gallbladder and small intestine for bile drainage and a concurrent gastrojejunostomy to restore gastric outflow. The code is used for patients with obstructive conditions where both biliary and gastric pathways require re-establishment, such as advanced or inoperable pancreatic malignancy. Nationally, this procedure is clinically significant due to its role in palliation and restoration of enteric and biliary function in high-risk surgical candidates.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical intent and service setting for CPT code 47721, plus guidance on the types of benchmarks and policy topics typically relevant for this procedure. The publication addresses reimbursement benchmarks, billing and coding considerations, and clinical context that influence coverage and utilization. It also highlights common billing modifiers provided in the input and notes where additional diagnostic coding or taxonomy details would normally inform payer-specific claims processing. Data not available in the input is identified where applicable.
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Billing Code Overview
CPT code 47721 describes a combined surgical procedure that creates an anastomosis between the gallbladder and the small intestine for biliary drainage while simultaneously creating a gastrojejunostomy to restore gastric emptying. The procedure is performed to re-establish both gastric and biliary function, typically when obstructive conditions such as inoperable pancreatic cancer prevent normal flow.
Service Type: Combined biliary and gastric bypass (surgical anastomoses)
Typical Site of Service: Inpatient hospital operating room