Examining Vascular Embolization or Occlusion Codes 37241 and 37242

Vascular embolization can prove challenging for many coders. Knowing the fundamentals of vascular embolization is important for successful CPT® coding. By gaining better comprehension of these services, healthcare coding and billing professionals can help ensure accurate coding while safeguarding full reimbursement. Let’s take a look at some of the details that define these codes when it comes to interventional radiology coding and billing. Here we explore 37241 and 37242.

Coding Breakdown and Fundamentals

How is code 37241 utilized?

Code 37241 is specific to venous embolization for clinical indications other than:

  • Hemorrhage
  •  Tumors
  • or organ ischemia or infarction.
37241Vascular embolization or occlusion, inclusive of all radiological supervision and interpretation,intraprocedural roadmapping, and imaging guidance necessary to complete the intervention; venous, other than hemorrhage (e.g., congenital or acquired venous malformations, venous and capillary hemangiomas, varices, varicoceles)

Make sure that code 37241 is not assigned for extremity incompetent veins or spider veins.

Examples of appropriate clinical indications for 37241 include:

  • embolization/sclerotherapy of gastric or esophageal varices
  • varicoceles
  • incompetent ovarian veins
  • venous or lymphatic malformations.

Note that it would not be appropriate to report code 37241 for embolization of accessory (side) branches of an AV dialysis graft. Instead, see code 36909 for more information.

When is code 37242 reported?

Arterial embolization for reasons other than hemorrhage, tumor, organ ischemia or infarction is reported with code 37242.

37242Vascular embolization or occlusion, inclusive of all radiological supervision and interpretation,intraprocedural roadmapping, and imaging guidance necessary to complete the intervention; arterial, other than hemorrhage or tumor (e.g., congenital or acquired arterial malformations, arteriovenous malformations, arteriovenous fistulas, aneurysms, pseudoaneurysms)

As noted in the code description there are several correct clinical indications for this code including:

  • arterial malformations
  • AV malformations, AV fistulas
  • aneurysms
  • and pseudoaneurysms

Understand that it is important not to assign this code for injection of thrombin into an extremity pseudoaneurysm as that is appropriately coded as 36002.

Circumstances When Chemoembolization or Radioembolization(Y90) is Planned

When hepatic chemoembolization or radioembolization (Y-90) is planned, other arteries such as the gastroduodenal or left gastric may be embolized to keep the chemotherapy or isotope from reaching other organs. If these arteries are embolized at the same session as the hepatic chemoembolization or radioembolization, only one embolization code (37243) would be assigned although additional vascular catheterization codes could be added. If these arteries are embolized at a session separate from the chemoembolization or radioembolization procedure, assign code 37242 (once) plus appropriate catheterization codes.

AAA Stent Graft with Endoleak Scenario

Patients with an abdominal aortic aneurysm (AAA) stent graft may be found to have an endoleak requiring embolization. An endoleak is not considered a hemorrhage but is rather a continued filling of the aneurysm either through accessory arteries or because the stent graft has become mispositioned. Embolization of the aneurysm or feeding vessel(s) resulting in the endoleak would be reported by 37242, not 37244. It may be necessary to approach the endoleak site by a translumbar injection, which would be coded 36160. However, understand that the NCCI Policy Manual for Medicare Services prohibits assigning a non-selective catheterization code such as 36160 with the embolization codes.

Circumstances Where the Balloon Catheters are Within the Internal Iliac

Interventional radiologists sometimes are asked to place balloon catheters within the internal iliac arteries prior to a C-section for a patient with placental issues and potential bleeding. If the balloons are placed but not inflated, report only catheter placements (i.e., 36245, 36246). If the IR physician is asked to inflate the balloons temporarily to prevent hemorrhage, report also 37242-52. Because both internal iliac arteries are in the same operative field, report 37242 only once.

As 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 Upper Extremity Interventional Radiology Coding webcast is an essential training tool for both audio and visual learners.

Facebook
Twitter
LinkedIn

Bryan Nordley

Bryan Nordley is a seasoned professional writer, strategist, and researcher with over a decade’s worth of combined experience. Bryan launched his professional health writing career at the University of British Columbia’s Faculty of Medicine, one of the top 30 faculty of medicine programs in the world, working under the School of Public Health as a communications assistant. From there, he expanded his expertise and knowledge into private healthcare and podiatry before taking the role of healthcare writer at MedLearn Media. Bryan is the lead writer for the MedLearn Publishing brand previously producing both the acclaimed radiology and laboratory compliance manager newsletter products, while currently writing the compliance questions of the week which reach over 10,000 subscribers, creating the MedLearn Publishing Insights blogs and collaborating with operations and nationally renowned subject matter experts, in addition to serving as an editor for a variety of MedLearn publications along with marketing initiatives. Bryan continues to keep his pulse on the latest healthcare industry news, analyzing and reporting with strategic insight.

Related Stories

Leave a Reply

Please log in to your account to comment on this article.

Featured Webcasts

The Cost of Ignoring Risk Adjustment: How HCCs Impact Revenue & Compliance

The Cost of Ignoring Risk Adjustment: How HCCs Impact Revenue & Compliance

Stop revenue leakage and boost hospital performance by mastering risk adjustment and HCCs. This essential webcast with expert Cheryl Ericson, RN, MS, CCDS, CDIP, will reveal how inaccurate patient acuity documentation leads to lost reimbursements through penalties from poor quality scores. Learn the critical differences between HCCs and traditional CCs/MCCs, adapt your CDI workflows, and ensure accurate payments in Medicare Advantage and value-based care models. Perfect for HIM leaders, coders, and CDI professionals.  Don’t miss this chance to protect your hospital’s revenue and reputation!

May 29, 2025
I050825

Mastering ICD-10-CM Coding for Diabetes and it’s Complications: Avoiding Denials & Ensuring Compliance

Struggling with ICD-10-CM coding for diabetes and complications? This expert-led webcast clarifies complex combination codes, documentation gaps, and sequencing rules to reduce denials and ensure compliance. Dr. Angela Comfort will provide actionable strategies to accurately link diabetes to complications, improve provider documentation, and optimize reimbursement—helping coders, CDI specialists, and HIM leaders minimize audit risks and strengthen revenue integrity. Don’t miss this chance to master diabetes coding with real-world case studies, key takeaways, and live Q&A!

May 8, 2025
2025 Coding Clinic Webcast Series

2025 ICD-10-CM/PCS Coding Clinic Update Webcast Series

Uncover critical guidance. HIM coding expert, Kay Piper, RHIA, CDIP, CCS, provides an interactive review on important information in each of the AHA’s 2025 ICD-10-CM/PCS Quarterly Coding Clinics in easy-to-access on-demand webcasts, available shortly after each official publication.

April 14, 2025

Trending News

Featured Webcasts

Medicare Advantage 2026: Navigating New Rules, Denial Protections & SDoH Shifts

Medicare Advantage 2026: Navigating New Rules, Denial Protections & SDoH Shifts

Stay ahead of Medicare Advantage’s 2025-2026 regulatory changes in this critical webcast featuring expert Tiffany Ferguson, LMSW, CMAC, ACM. Learn how new CMS rules limit MA plan denials, protect hospitals from retroactive claim reopenings, and modify Two-Midnight Rule enforcement—plus key insights on omitted SDoH mandates and heightened readmission scrutiny. Discover actionable strategies to safeguard revenue, ensure compliance, and adapt to evolving health equity priorities before the June 2025 deadline. Essential for hospitals, revenue cycle teams, and compliance professionals navigating MA’s shifting landscape.

May 28, 2025
Navigating the 3-Day & 1-Day Payment Window: Compliance, Billing, and Revenue Protection

Navigating the 3-Day & 1-Day Payment Window: Compliance, Billing, and Revenue Protection

Struggling with CMS’s 3-Day Payment Window? Join compliance expert Michael G. Calahan, PA, MBA, CCO, to master billing restrictions for pre-admission and inter-facility services. Learn how to avoid audit risks, optimize revenue cycle workflows, and ensure compliance across departments. Critical for C-suite leaders, providers, coders, revenue cycle teams, and compliance teams—this webcast delivers actionable strategies to protect reimbursements and meet federal regulations.

May 15, 2025
Audit-Proof Your Wound Care Procedures: Expert Insights on Compliance and Risk Mitigation

Audit-Proof Your Wound Care Procedures: Expert Insights on Compliance and Risk Mitigation

Providers face increasing Medicare audits when using skin substitute grafts, leaving many unprepared for claim denials and financial liabilities. Join veteran healthcare attorney Andrew B. Wachler, Esq., in this essential webcast and master the Medicare audit process, learn best practices for compliant billing and documentation, and mitigate fraud and abuse risks. With actionable insights and a live Q&A session, you’ll gain the tools to defend your practice and ensure compliance in this rapidly evolving landscape.

April 17, 2025
Utilization Review Essentials: What Every Professional Needs to Know About Medicare

Utilization Review Essentials: What Every Professional Needs to Know About Medicare

Dr. Ronald Hirsch dives into the basics of Medicare for clinicians to be successful as utilization review professionals. He’ll break down what Medicare does and doesn’t pay for, what services it provides and how hospitals get paid for providing those services – including both inpatient and outpatient. Learn how claims are prepared and how much patients must pay for their care. By attending our webcast, you will gain a new understanding of these issues and be better equipped to talk to patients, to their medical staff, and to their administrative team.

March 20, 2025

Trending News

Celebrate Lab Week with MedLearn! Sign up to win one year of our Laboratory All Access Pass! Click here to learn more →

CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 2 with code CYBER24