Headline: CPT code 47531 Enables Image-Guided Percutaneous Cholangiography

Lead: CPT code 47531 identifies the image-guided injection of contrast into the bile ducts via an existing percutaneous access route using ultrasound and/or fluoroscopy guidance. The code captures a focused radiologic service that supports diagnosis and management of biliary pathology.

CPT code 47531 represents a targeted, image-guided diagnostic intervention used to visualize the biliary tree when contrast injection through an established percutaneous tract is required. This service is performed under ultrasound and/or fluoroscopic guidance to ensure accurate delivery of contrast and minimize complication risk. Nationally, the code matters because it defines billing and clinical documentation standards for a common interventional radiology procedure used in diagnosing biliary obstruction, leak, and postoperative evaluation.

Key payers covered in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what the code represents, typical sites of service, and the clinical context in which it is used. The publication provides benchmarks and payer coverage considerations, notes on billing practice and code-specific documentation expectations, and pointers to related procedural coding used in biliary imaging when available.

This summary serves clinicians, coding professionals, and policy analysts seeking a national-level understanding of CPT code 47531 and its role in biliary imaging workflows.