47420 Incision of bile duct
Also known as: Choledocholithotomy, CBD exploration, common bile duct exploration
Surgical incision into the common bile duct, typically to remove stones (choledocholithotomy) or address obstruction and biliary pathology.
In Plain Language
Opening the main bile duct to remove gallstones
Clinical Context
Performed for choledocholithiasis (bile duct stones), strictures, or obstruction. Open approach when endoscopic retrograde cholangiopancreatography (ERCP) is unsuccessful or contraindicated.
RVU Breakdown
| Work RVU | 21.48 |
| Total RVU | 21.48 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. This code has a 90-day global period, which includes the day of the procedure, 1 day preoperative, and 90 days of postoperative care. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 21.48, this code ranks in the 84th percentile among Surgery codes — 2.7x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 47420?
CPT 47420 (Incision of bile duct) is a Surgery code. Surgical incision into the common bile duct, typically to remove stones (choledocholithotomy) or address obstruction and biliary pathology.
What is the wRVU value for CPT 47420?
The work RVU for CPT 47420 is 21.48. This code is primarily used by Hepatobiliary Surgery, General Surgery. It has a 90-day global period.
When is CPT 47420 used?
Performed for choledocholithiasis (bile duct stones), strictures, or obstruction. Open approach when endoscopic retrograde cholangiopancreatography (ERCP) is unsuccessful or contraindicated.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.