Summary & Overview
CPT 47785: Jejunum to Intrahepatic Biliary Duct Anastomosis
CPT code 47785 represents a surgical biliary-enteric anastomosis connecting the jejunum to the liver's intrahepatic biliary ducts. The procedure is clinically significant for managing complex biliary obstruction or facilitating internal biliary drainage when other approaches are not feasible. Nationally, this code captures high-acuity hepatobiliary surgery with implications for hospital resource use, perioperative care pathways, and specialty billing practices.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides clinicians, billing staff, and policy analysts with benchmark information on utilization and reimbursement patterns, summaries of relevant coding guidance, and the clinical context surrounding when the procedure is typically indicated. Readers will learn clinical indications and typical settings for the service, how payers commonly recognize and reimburse the code, and what documentation elements are essential for claim support. Data limitations and payer-specific variations are noted where available.
This executive summary is intended for a national audience interested in hepatobiliary surgical coding, hospital billing operations, and payer policy for complex surgical procedures.
Billing Code Overview
CPT code 47785 describes a surgical procedure in which the provider creates an anastomosis between the jejunum of the small intestine and the liver's intrahepatic biliary ducts. This service involves establishing a direct intestinal-to-biliary drainage pathway to bypass or decompress biliary obstruction.
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Service type: Surgical biliary-enteric anastomosis
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Typical site of service: Operating room or surgical suite in an acute care hospital or specialized surgical center
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with obstructive jaundice from benign or malignant extrahepatic biliary obstruction who has undergone prior failed endoscopic or percutaneous biliary drainage. The patient presents with progressive cholestatic liver tests, pruritus, and symptomatic biliary obstruction despite prior stenting attempts. After multidisciplinary review, the surgical team schedules an open or laparoscopic hepaticojejunostomy (jejunum-to-intrahepatic bile duct anastomosis) to establish durable biliary-enteric drainage.
Preoperative workflow includes cross-sectional imaging (CT or MRCP) to delineate intrahepatic ductal anatomy, laboratory evaluation (bilirubin, INR, LFTs), and anesthesia assessment. Intraoperatively, the surgeon performs adhesiolysis if prior surgery exists, identifies dilated intrahepatic ducts or segmental ducts, mobilizes a Roux-en-Y jejunal limb, and creates a mucosa-to-mucosa anastomosis between the jejunum and targeted intrahepatic biliary ducts. The procedure may be staged with intraoperative cholangiography, irrigation, and placement of external or internal stents. Postoperative care includes monitoring liver function, drainage output, infection surveillance, and imaging if bile leak is suspected. Typical sites of service are the hospital operating room and post-anesthesia care unit with subsequent inpatient recovery.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | Standard use when no modifier applies |