CPT 74300 Intraoperative Cholangiography Reimbursement

CPT code 74300 represents imaging supervision and interpretation (S&I) performed during intraoperative cholangiography when radiographic contrast is injected into the common bile duct to detect stones, strictures, tumors, or other obstructions. Nationally, this code matters because it isolates the professional imaging interpretation component from the surgical and technical services, allowing separate reporting and clarity in claims for intraoperative biliary imaging. That separation affects billing workflows, payer adjudication, and provider documentation practices across hospital and ambulatory surgical settings.

Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for intraoperative cholangiography, common billing and reporting considerations for the S&I component, and the typical sites of service where CPT code 74300 is used. The publication also outlines common modifiers and payer interactions relevant to professional imaging reporting, guidance on where this code is applicable versus surgical procedure codes, and notes about missing input data where applicable.

This summary is intended for clinicians, coding professionals, and policy analysts seeking a clear, national-level explanation of what CPT code 74300 represents, why separate reporting is used, and what elements to review when evaluating claims or policy impact.

Billing Code Overview

CPT code 74300 describes imaging supervision and interpretation performed while a provider injects a radiographic contrast material into the patient’s common bile duct during surgery to detect stones, strictures, tumors, or other obstructions. This code represents only the supervision and interpretation (S&I) component of intraoperative cholangiography and is reported separately from surgical or technical services.

Service Type: Imaging supervision and interpretation during intraoperative cholangiography

Typical Site of Service: Operating room or surgical suite (intraoperative setting)

Clinical Context

A 56-year-old patient undergoing an open or laparoscopic cholecystectomy has intraoperative cholangiography to assess for choledocholithiasis or biliary obstruction. The surgeon cannulates the common bile duct and injects iodinated contrast while a radiology provider or an appropriately credentialed physician supervises and interprets fluoroscopic images in real time to identify filling defects, strictures, or extravasation. The imaging supervision and interpretation are documented separately from the surgical procedure; the interpreting provider records findings, time of service, contrast type, and any additional imaging maneuvers performed. If stones or obstruction are identified, the surgical team may proceed with duct exploration, stone extraction, stent placement, or postoperative planning based on the interpreted images.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician’s interpretation separate from technical imaging resources when applicable.
`59`	Distinct procedural service	Use when services are independent from the primary surgical procedure and need to be distinguished for separate payment when appropriate.

Taxonomy Code	Specialty	Notes
2080P0200X	Radiology	Interpreting physicians who perform intraoperative imaging supervision and interpretation.
207P00000X	Surgery	Surgeons (general or hepatobiliary) perform the surgical cannulation and may document the operative cholangiogram.
207RP1001X	General Surgery	Common specialty performing cholecystectomy and intraoperative cholangiography.
207RH0000X	Hepatobiliary Surgery	Subspecialists who may perform complex biliary exploration and coordinate intraoperative imaging.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K80.50`	Calculus of bile duct without cholangitis or cholecystitis, unspecified	Choledocholithiasis is a primary indication for intraoperative cholangiography to detect common bile duct stones.
`K83.1`	Obstruction of bile duct	Cholangiography helps identify strictures or obstructing lesions in the common bile duct.
`K80.4`	Other cholelithiasis with cholecystitis	Patients with gallstones and inflammation may undergo cholecystectomy with cholangiography to evaluate the ductal system.
`K83.0`	Cholestasis	Imaging can demonstrate biliary obstruction patterns contributing to cholestasis.
`C24.0`	Malignant neoplasm of extrahepatic bile duct	Suspected or known biliary malignancy may prompt intraoperative imaging to define the level and extent of obstruction.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`47562`	Laparoscopic cholecystectomy with cholangiography, when performed	Common primary surgical procedure during which intraoperative cholangiography occurs; surgeon performs cystic duct cannulation and contrast injection.
`47563`	Laparoscopic cholecystectomy with common duct exploration, with or without T-tube	Performed if stones are identified on the cholangiogram and the surgeon proceeds to explore and clear the common bile duct.
`74301`	Cholangiography, diagnostic; percutaneous	Radiographic cholangiography via percutaneous approach — alternative technique for biliary imaging in other clinical contexts.
`47590`	Exploration of common bile duct	Surgical code for open or laparoscopic exploration of the common bile duct often following positive intraoperative cholangiography.
`76000`	Fluoroscopic guidance for needle placement (eg, biopsy, aspiration, injection)	Fluoroscopic assistance codes that may be reported when additional fluoroscopic guidance services are provided in the course of biliary interventions.

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Summary & Overview

CPT 74300: Intraoperative Cholangiography Imaging Supervision and Interpretation