Interventional radiology coding remains some of the most complex to understand and report accurately. With error rates approaching 30% in many areas, there is a lot of opportunity for costly mistakes and omissions. When it comes to the biliary tract, there are a multitude of key components worth knowing for compliant coding. Let’s take a look at the rationale to overcome any obstacles associated with this area.
First and foremost, bile is a fluid that is created in the liver, then flows through bile ducts (tubes/passages) into the gallbladder where it is stored. When a person eats, bile flows from the gallbladder through the bile ducts into the duodenum where it helps with digestion by breaking down fats into fatty acids.
When a bile duct becomes blocked, bile cannot flow into the duodenum causing jaundice, abdominal pain, fever, nausea, vomiting, and other symptoms. Some of the causes of blockages are tumors, scarring, inflammation, and gallstones.
There are open surgical procedures available to evaluate and treat bile-duct blockage. However, percutaneous, minimally invasive procedures performed by interventional radiologists are becoming common. Understand that codes for percutaneous procedures in the biliary system underwent a significant revision for 2016. In addition, Medicare has revised the global periods for most of these procedures to 0 days instead of 90 days. Diagnostic exams are included in most of the therapeutic procedures when performed in the same session, as are imaging and supervision and interpretation.
Cholecystitis is one of the first areas to understand. What is cholecystitis? The condition is classified as inflammation of the gallbladder. A patient with cholecystitis may need to have a drainage catheter placed. When a physician places the drainage tube through the abdominal wall into the gallbladder, code 47490—a complete code—is assigned. Note that this code continues to have a 10-day global period. Injection of contrast to evaluate a previously placed cholecystostomy tudbe should be reported with a cholangiogram through existing access code 47531. Cholecystostomy check and change would be reported with code 47536—exchange of biliary drainage catheter.
Understand that this code would be inclusive of contrast injection through the existing catheter.
| 47490 | Cholecystostomy, percutaneous, complete procedure, including imaging guidance, catheter placement, cholecystogram when performed, and radiological supervision and interpretation |
One question that may come up is whether additional imaging should be assigned, or would another guidance code be necessary? For this instance, no additional imaging or guidance code would be assigned. Imaging of the bile ducts after injection of contrast is a cholangiogram. There are several codes to choose from depending on the circumstances.
| 74300 | Cholangiography and/or pancreatography; intraoperative, radiological supervision and interpretation |
| +74301 | Cholangiography and/or pancreatography; additional set intraoperative, radiological supervision and interpretation (List separately in addition to code for primary procedure) |
When a radiologist interprets images from a cholangiogram being performed in surgery, he would code 74300-26-52 for the initial set of images. If a subsequent set of images is returned for interpretation, assign code 74301-26-52. Note that Modifier 26 is added to these codes to indicate that only the professional component is being billed. Modifier 52 indicates that a lesser service is performed, in this case interpretation only, not supervision.
| 47531 | Injection procedure for cholangiography, percutaneous, complete diagnostic procedure including imaging guidance (e.g., ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation; existing access |
| 47532 | Injection procedure for cholangiography, percutaneous, complete diagnostic procedure including imaging guidance (e.g., ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation; new access (e.g., percutaneous transhepatic cholangiogram) |
Understand that the two codes above for stand-alone percutaneous diagnostic cholangiography replace codes 47500, 47505, 74320, and 74305. Both codes are complete codes, including the injection of contrast, imaging, and supervision and interpretation.
So, what is the difference between the two codes and when should each be assigned? Code 47531 is reported when a diagnostic cholangiogram is performed through an existing access such as a T-tube or external biliary drainage catheter.
When there is no existing access to the biliary system, code 47532 is reported for the percutaneous access and diagnostic cholangiogram. This may be referred to as a “PTC” or a “PTHC” (percutaneous transhepatic cholangiogram). Do not report 47531 or 47532 with 47533–47541 as diagnostic cholangiography is included in these therapeutic procedure codes.
This insight is just the tip of the iceberg for biliary tract and GI coding. As the pandemic eases and service volumes rebound, now more than ever it is imperative to make sure your CPT® coding is correct and compliant. Master more interventional radiology topics and break down the complexity with expert-infused insight. Our GI/Biliary Interventional Radiology Coding webcast on-demand is an essential training tool for both audio and visual learners.
Today, we are continuing our January look at 2026 CPT code updates. As a reminder there were 5,933 new CPT codes with the January 1
Happy New Year! January brings resolutions, fresh starts, maybe a new diet and also newCPT codes. There were 5,933 new codes as part of the
Please log in to your account to comment on this article.
Sepsis sequencing continues to challenge even experienced coding and CDI professionals, with evolving guidelines, documentation gaps, and payer scrutiny driving denials and data inconsistencies. In this webcast, Payal Sinha, MBA, RHIA, CCDS, CDIP, CCS, CCS-P, CCDS-O, CRC, CRCR, provides clear guideline-based strategies to accurately code sepsis, severe sepsis, and septic shock, assign POA indicators, clarify the relationship between infection and organ dysfunction, and align documentation across teams. Attendees will gain practical tools to strengthen audit defensibility, improve first-pass accuracy, support appeal success, reduce denials, and ensure accurate quality reporting, empowering organizations to achieve consistent, compliant sepsis coding outcomes.
Expert presenters Kathy Pride, RHIT, CPC, CCS-P, CPMA, and Brandi Russell, RHIA, CCS, COC, CPMA, break down complex fracture care coding rules, walk through correct modifier application (-25, -57, 54, 55), and clarify sequencing for initial and subsequent encounters. Attendees will gain the practical knowledge needed to submit clean claims, ensure compliance, and stay one step ahead of payer audits in 2026.
Accurately determining the principal diagnosis is critical for compliant billing, appropriate reimbursement, and valid quality reporting — yet it remains one of the most subjective and error-prone areas in inpatient coding. In this expert-led session, Cheryl Ericson, RN, MS, CCDS, CDIP, demystifies the complexities of principal diagnosis assignment, bridging the gap between coding rules and clinical reality. Learn how to strengthen your organization’s coding accuracy, reduce denials, and ensure your documentation supports true medical necessity.
Denials continue to delay reimbursement, increase administrative burden, and threaten financial stability across healthcare organizations. This essential webcast tackles the root causes—rising payer scrutiny, fragmented workflows, inconsistent documentation, and underused analytics—and offers proven, data-driven strategies to prevent and overturn denials. Attendees will gain practical tools to strengthen documentation and coding accuracy, engage clinicians effectively, and leverage predictive analytics and AI to identify risks before they impact revenue. Through real-world case examples and actionable guidance, this session empowers coding, CDI, and revenue cycle professionals to shift from reactive appeals to proactive denial prevention and revenue protection.
Federal auditors are intensifying their focus on inpatient psychiatric facilities, using advanced data analytics to spotlight outliers and pursue high‑dollar repayments. In this high‑impact webcast, Michael Calahan, PA, MBA, Compliance Officer and V.P., Hospital & Physician Compliance, breaks down what regulators are really targeting in IPF-PPS admissions, documentation, treatment and discharge planning. Attendees will learn practical steps to tighten processes, avoid common audit triggers and protect reimbursement and reduce the risk of multimillion-dollar repayment demands.
In this timely session, Stacey Shillito, CDIP, CPMA, CCS, CCS-P, CPEDC, COPC, breaks down the complexities of Medical Decision Making (MDM) documentation so providers can confidently capture the true complexity of their care. Attendees will learn practical, efficient strategies to ensure documentation aligns with current E/M guidelines, supports accurate coding, and reduces audit risk, all without adding to charting time.
Join Ronald Hirsch, MD, FACP, CHCQM for The PEPPER Returns – Risk and Opportunity at Your Fingertips, a practical webcast that demystifies the PEPPER and shows you how to turn complex claims data into actionable insights. Dr. Hirsch will explain how to interpret key measures, identify compliance risks, uncover missed revenue opportunities, and understand new updates in the PEPPER, all to help your organization stay ahead of audits and use this powerful data proactively.
Stay ahead of the 2026-2027 audit surge with “Top 10 Audit Targets for 2026-2027 for Hospitals & Physicians: Protect Your Revenue,” a high-impact webcast led by Michael Calahan, PA, MBA. This concise session gives hospitals and physicians clear insight into the most likely federal audit targets, such as E/M services, split/shared and critical care, observation and admissions, device credits, and Two-Midnight Rule changes, and shows how to tighten documentation, coding, and internal processes to reduce denials, recoupments, and penalties. Attendees walk away with practical best practices to protect revenue, strengthen compliance, and better prepare their teams for inevitable audits.
CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 1 with code CYBER25
CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 2 with code CYBER24
