CPT code 47785: Biliary-enteric anastomosis, bile duct to bowel2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 47785 in California.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 47785 covers

The surgeon creates a connection between a bile duct and a segment of bowel so bile can drain into the digestive tract. This reconstruction may be performed during abdominal surgery when the normal biliary pathway cannot provide adequate drainage. The operative report should identify the duct and bowel involved and describe the anastomosis; the code is not for connecting the gallbladder to bowel or simply exploring a duct.

Report 47785 for the biliary-to-bowel reconstruction supported by the operative details, distinguishing it from neighboring codes by the anatomy and technique documented. Medicare assigns a 90-day global period, which includes the day-before preoperative visit and 90 days of related postoperative care. If multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Modifier 50 is inappropriate for this service. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 47785 pays more and less in California

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

29 of 29 payment localities

How the 47785 rate is calculated

Each of 47785’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 47785

47785 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 51

47785 compared with similar codes

How to choose

47760Biliary bypassCholedochoenterostomy

Both describe biliary-enteric reconstruction. Choose between them using the specific anatomy and procedure documented in the operative report, not merely the shared drainage goal.

47765Biliary bypassExtrahepatic duct, intestinal transposition

47765 is identified for reconstruction involving liver ducts and bowel. Use 47785 only when the documented procedure matches its specific bile duct-to-bowel code description.

47720Biliary bypassGallbladder to bowel

47720 connects the gallbladder to the gastrointestinal tract; 47785 is for a connection involving a bile duct.

Codes related to 47785

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates