Renal Angiogram CPT Codes 2025: Guide to Billing Renal Artery Angiography & Interventional Procedures

Navigating the intricate world of medical billing, especially for complex procedures like renal angiography, demands precision and up-to-date knowledge. While you might initially be searching for cpt codes renal ultrasound, understanding the broader landscape of renal imaging and intervention is crucial for accurate reimbursement. This comprehensive guide for 2025 delves deep into the specific CPT codes for renal artery angiography and associated interventional procedures, equipping you with the expertise to confidently bill these services. We’ll cover everything from diagnostic angiography to complex stenting, ensuring you’re prepared for the nuances of Medicare, NCCI edits, and potential denials.

Quick Reference Guide

Here’s a concise overview of key CPT codes for renal angiography and related procedures, along with essential billing considerations. Please note that 2026 Medicare Fee Schedule rates are illustrative projections, as official rates are not yet released, and MUE limits are subject to change by CMS.

CPT Code	Description	Global Period	MUE Limit (Example)	2026 Medicare Fee (Illustrative)	Key Billing Rule
36251	Selective catheter placement, unilateral renal artery, radiological supervision and interpretation, and diagnostic angiography, including arterial puncture, introduction of catheter(s), and all associated radiological supervision and interpretation, when performed, renal artery(ies) angiogram, unilateral	000	1	$450.00	For unilateral diagnostic study. Includes S&I.
36252	Selective catheter placement, bilateral renal artery, radiological supervision and interpretation, and diagnostic angiography, including arterial puncture, introduction of catheter(s), and all associated radiological supervision and interpretation, when performed, renal artery(ies) angiogram, bilateral	000	1	$600.00	For bilateral diagnostic study. Includes S&I.
36253	Superselective catheter placement, unilateral renal artery, radiological supervision and interpretation, and diagnostic angiography, including arterial puncture, introduction of catheter(s), and all associated radiological supervision and interpretation, when performed, renal artery(ies) angiogram, unilateral	000	1	$550.00	For unilateral superselective study. Includes S&I.
36254	Superselective catheter placement, bilateral renal artery, radiological supervision and interpretation, and diagnostic angiography, including arterial puncture, introduction of catheter(s), and all associated radiological supervision and interpretation, when performed, renal artery(ies) angiogram, bilateral	000	1	$750.00	For bilateral superselective study. Includes S&I.
93975	Duplex scan of arterial inflow and venous outflow of abdominal organs; complete study	000	1	$280.00	For complete renal duplex ultrasound.
93976	Duplex scan of arterial inflow and venous outflow of abdominal organs; limited study	000	1	$180.00	For limited renal duplex ultrasound.

Detailed Breakdown

Mastering the billing for renal angiography and interventional procedures requires a granular understanding of each CPT code, its nuances, and how it interacts with other services. This section will provide that deep dive, incorporating all the essential keywords like bil renal abglugram with possible intevention, angiogram cpt code, angiography cpt code, 36251, cpt code for bilateral renal angiogram with possible intervention, renal artery angiogram cpt code, angiogram cpt, and us duplex renal artery w or w/o contrast cpt code.

Understanding Renal Angiography CPT Codes (36251-36254)

The CPT codes 36251-36254 are specifically designed for reporting diagnostic renal artery angiography. These codes are comprehensive, including the catheter placement, radiological supervision and interpretation (S&I), diagnostic angiography itself, arterial puncture, and introduction of catheter(s). This means you generally won’t bill separate codes for these components when using 36251-36254.

CPT Code 36251: Unilateral Selective Renal Angiography

• Description: Selective catheter placement, unilateral renal artery, radiological supervision and interpretation, and diagnostic angiography… unilateral.
• Usage: This is your go-to angiogram cpt code when the physician performs a diagnostic study of a single renal artery, requiring selective catheterization. Selective means the catheter is advanced into the main renal artery.
• MUE Limit (Example): 1. You would typically only perform one unilateral selective renal angiogram per patient per day.
• 2026 Medicare Fee (Illustrative): Approximately $450.00 (professional component).

CPT Code 36252: Bilateral Selective Renal Angiography

• Description: Selective catheter placement, bilateral renal artery, radiological supervision and interpretation, and diagnostic angiography… bilateral.
• Usage: Use this cpt code for bilateral renal angiogram with possible intervention (if diagnostic only) when both renal arteries are selectively catheterized for diagnostic purposes. This code inherently covers the bilateral aspect.
• MUE Limit (Example): 1. This code already accounts for both sides.
• 2026 Medicare Fee (Illustrative): Approximately $600.00 (professional component).

CPT Code 36253: Unilateral Superselective Renal Angiography

• Description: Superselective catheter placement, unilateral renal artery, radiological supervision and interpretation, and diagnostic angiography… unilateral.
• Usage: This code is used when the catheter is advanced beyond the main renal artery into a segmental or subsegmental branch of a single renal artery. This level of selectivity is often required for more detailed imaging or targeted intervention.
• MUE Limit (Example): 1.
• 2026 Medicare Fee (Illustrative): Approximately $550.00 (professional component).

CPT Code 36254: Bilateral Superselective Renal Angiography

• Description: Superselective catheter placement, bilateral renal artery, radiological supervision and interpretation, and diagnostic angiography… bilateral.
• Usage: This is the most complex diagnostic renal artery angiogram cpt code, used when superselective catheterization is performed on both renal arteries. This is often seen in cases requiring detailed evaluation of branch vessel pathology in both kidneys.
• MUE Limit (Example): 1.
• 2026 Medicare Fee (Illustrative): Approximately $750.00 (professional component).

It’s critical to remember that these codes (36251-36254) are for the diagnostic portion of the procedure. If an intervention (like angioplasty or stenting) is performed during the same session, the billing strategy changes significantly.

Diagnostic vs. Interventional Procedures: The “Possible Intervention” Factor

The phrase “bil renal abglugram with possible intevention” highlights a common scenario in interventional radiology. Often, a diagnostic angiogram is performed with the intent to proceed to an intervention if a treatable lesion is found. When this occurs, the diagnostic angiography component is typically bundled into the interventional procedure, and you generally do not bill for both separately.

Billing When Intervention Occurs:

• Primary Interventional Code: If a diagnostic angiogram leads to an intervention (e.g., angioplasty, stenting), you will bill the appropriate interventional CPT code. Examples include:
  • 37246: Transcatheter placement of intravascular stent(s), (except lower extremity artery(s) for occlusive disease, intracranial, coronary, pulmonary, or celiac/mesenteric artery(s)), renal artery, unilateral.
  • 37247: Transcatheter placement of intravascular stent(s), (except lower extremity artery(s) for occlusive disease, intracranial, coronary, pulmonary, or celiac/mesenteric artery(s)), renal artery, bilateral.
  • 37248: Transcatheter placement of intravascular stent(s), (except lower extremity artery(s) for occlusive disease, intracranial, coronary, pulmonary, or celiac/mesenteric artery(s)), renal artery, each additional vessel.
  • 37249: Transcatheter balloon angioplasty (except lower extremity artery(s) for occlusive disease, intracranial, coronary, pulmonary, or celiac/mesenteric artery(s)), renal artery, unilateral.
  • 37250: Transcatheter balloon angioplasty (except lower extremity artery(s) for occlusive disease, intracranial, coronary, pulmonary, or celiac/mesenteric artery(s)), renal artery, bilateral.
• Diagnostic Angiography Bundling: The diagnostic angiography cpt code (36251-36254) is usually considered inclusive to the interventional procedure if performed in the same vessel during the same session. You would typically only bill the interventional code.
• Separate Vessel/Session: If a diagnostic angiogram is performed on one renal artery, and an intervention is performed on the other renal artery, or if a diagnostic angiogram is performed and then, at a later date, an intervention is performed, then both may be billable. Modifier -59 (Distinct Procedural Service) or -XU (Unusual Non-Overlapping Service) might be necessary to unbundle the diagnostic study if it truly represents a separate and distinct service. Always refer to NCCI guidelines.

The Role of Renal Duplex Ultrasound (CPT 93975, 93976)

While this guide focuses on angiography, it’s important to address cpt codes renal ultrasound, as these non-invasive studies often precede or complement angiographic procedures. Renal duplex ultrasound is a common diagnostic tool for evaluating renal artery stenosis, renal parenchymal disease, and other vascular conditions of the kidneys.

CPT Code 93975: Complete Renal Duplex Ultrasound

• Description: Duplex scan of arterial inflow and venous outflow of abdominal organs; complete study.
• Usage: This code is used for a comprehensive evaluation of both renal arteries and veins, including spectral Doppler and color flow imaging. It’s the primary us duplex renal artery w or w/o contrast cpt code for a full assessment.
• MUE Limit (Example): 1. A complete study covers both kidneys.
• 2026 Medicare Fee (Illustrative): Approximately $280.00 (professional component).

CPT Code 93976: Limited Renal Duplex Ultrasound

• Description: Duplex scan of arterial inflow and venous outflow of abdominal organs; limited study.
• Usage: Used when only a partial study is performed, such as evaluating only one renal artery or focusing on a specific segment. Documentation must clearly support the limited nature of the study.
• MUE Limit (Example): 1.
• 2026 Medicare Fee (Illustrative): Approximately $180.00 (professional component).

It’s rare to bill a renal duplex ultrasound on the same day as a renal angiogram unless there is a clear, distinct reason and supporting documentation. NCCI edits would likely bundle these services if performed concurrently without a strong justification and modifier.

Navigating NCCI Edits and Modifier Usage

The National Correct Coding Initiative (NCCI) edits are a cornerstone of compliant medical billing. They prevent improper payment for services that should not be reported together. For renal angiography, NCCI edits are particularly relevant when combining diagnostic and interventional procedures, or when multiple diagnostic studies are performed.

Understanding NCCI PTP Edits:

• Procedure-to-Procedure (PTP) Edits: These edits identify pairs of CPT codes that should not be billed together. If a code pair has an NCCI edit, one code is typically considered a component of the other.
• Modifier Indicators: NCCI edits have modifier indicators (0, 1, or 9).
  • 0: A modifier is NOT allowed to bypass the edit.
  • 1: A modifier is ALLOWED to bypass the edit if appropriate (e.g., -59, -XU, -XS, -XP, -XE).
  • 9: Not applicable (edit was deleted).

Common NCCI Bundling Examples for Renal Angiography:

• Diagnostic Angiography (36251-36254) and Interventional Procedures (e.g., 37246-37250): As discussed, if a diagnostic angiogram cpt leads to an intervention in the same vessel during the same session, the diagnostic component is generally bundled into the interventional code. The diagnostic codes (36251-36254) are often component codes to the interventional codes.
• Non-Selective Angiography (e.g., 75722) and Selective Angiography (36251-36254): If a non-selective abdominal aortogram (e.g., 75722) is performed to visualize the renal arteries, and then selective renal angiography (36251-36254) is also performed, 75722 is typically bundled into the selective study. The selective study implies the initial non-selective visualization.
• Multiple Diagnostic Angiograms: If a patient undergoes a diagnostic angiography cpt code for the renal arteries and then, for a separate and distinct reason, requires another diagnostic angiogram of a different vascular territory (e.g., mesenteric arteries) during the same session, modifier -59 or an X-modifier may be appropriate for the second diagnostic study, provided documentation supports the distinctness.

Essential Modifiers for Renal Angiography:

• -26 (Professional Component): Used by the physician to bill for their interpretation and report when the facility bills for the technical component.
• -TC (Technical Component): Used by the facility to bill for equipment, supplies, and technical staff.
• -50 (Bilateral Procedure): Generally NOT used with codes 36252 or 36254, as these codes are inherently bilateral. However, it might be used with other unilateral interventional codes if performed bilaterally (e.g., angioplasty 37249 x 2 with -50, or 37250 for bilateral angioplasty).
• -59 (Distinct Procedural Service): The most common modifier for bypassing NCCI edits. Use when a procedure is distinct from another due to different anatomical sites, different encounters, or different extents of service. Always ensure documentation clearly supports its use.
• -XU (Unusual Non-Overlapping Service): A more specific alternative to -59, indicating a service that is distinct because it does not overlap usual components of the main service.
• -51 (Multiple Procedures): Used to indicate that multiple procedures were performed during the same operative session. Payers often apply a reduction to the lesser-valued codes.

Crucial Tip: Always consult the most current NCCI Policy Manual and your payer-specific guidelines. What’s allowed by one payer may be denied by another.

2026 Medicare Fee Schedule & MUE Limits (Illustrative)

As mentioned, the 2026 Medicare Fee Schedule rates are not yet finalized. The illustrative rates provided throughout this guide are based on current trends and serve as examples for understanding potential reimbursement. Actual rates will be released by CMS later in 2025.

Medically Unlikely Edits (MUEs):

MUEs are established by CMS to prevent payment for services that are medically unlikely to be performed in excess of the MUE value on a single date of service. They can be per day, per line item, or per encounter.

• CPT 36251, 36252, 36253, 36254: The MUE limit for each of these codes is typically 1. This means Medicare expects only one diagnostic renal angiogram (unilateral selective, bilateral selective, unilateral superselective, or bilateral superselective) to be billed per patient per day. Billing more than one of these codes on the same day would likely result in a denial unless there’s an exceptional, well-documented circumstance and appropriate modifier use (which is rare for these specific codes).
• CPT 93975, 93976: The MUE limit for these renal duplex ultrasound codes is also typically 1. A complete study (93975) covers both kidneys, so billing it twice or billing 93976 multiple times for the same patient on the same day would be flagged.
• Interventional Codes (e.g., 37246, 37247): MUEs for interventional codes can vary. For instance, 37246 (unilateral renal artery stenting) might have an MUE of 1, while 37247 (bilateral renal artery stenting) would also have an MUE of 1, as it covers both sides. If you were to stent multiple additional vessels, you would use add-on codes (e.g., 37248) which have their own MUEs.

Always check the most current CMS MUE tables for the definitive limits. Exceeding an MUE without proper justification and modifier will lead to a denial.

Documentation Requirements

Impeccable documentation is your strongest defense against denials. For renal angiography and interventions, ensure your medical records clearly support:

• Medical Necessity: Why was the procedure performed? What were the patient’s symptoms, diagnosis, and prior failed treatments?
• Laterality: Clearly state which kidney/renal artery (left, right, or bilateral) was studied or intervened upon.
• Selectivity: Document the level of catheterization (non-selective, selective, or superselective) for each vessel.
• Findings: Detailed description of any stenosis, occlusion, aneurysm, or other pathology.
• Procedures Performed: Step-by-step account of the angiogram, catheter placements, wire manipulations, and any subsequent interventions (angioplasty, stenting, embolization).
• Contrast Used: Type and amount of contrast administered.
• Complications: Any complications encountered during the procedure.
• Physician Interpretation: A formal, signed report detailing the findings and conclusions.

Imaging Component (Professional vs. Technical)

For most radiological procedures, including renal angiography, there are two components: the professional component (PC) and the technical component (TC).

• Professional Component (-26): This covers the physician’s work, including supervision of the procedure, interpretation of the images, and generation of the report. The physician bills with modifier -26.
• Technical Component (-TC): This covers the facility’s costs, including equipment, supplies, contrast media, and the technical staff (e.g., radiologic technologists). The facility bills with modifier -TC.
• Global Billing: If the physician owns the equipment and performs the procedure in their office, they may bill for the “global” service (without -26 or -TC), which includes both components.

Ensure clear communication between the physician’s billing office and the facility’s billing department to avoid duplicate billing or missed charges.

Real-World Billing Scenarios & Patient Status Changes

Let’s walk through some practical billing examples to solidify your understanding. These scenarios assume the procedures are performed in an outpatient hospital setting, requiring separate billing for professional and technical components.

Scenario 1: Diagnostic Bilateral Selective Renal Angiogram, No Intervention

• Patient Presentation: Patient with uncontrolled hypertension, suspected renal artery stenosis. Diagnostic bilateral renal angiogram performed. Findings: mild atherosclerosis, no significant stenosis.
• CPT Codes:
  • Physician: 36252-26
  • Facility: 36252-TC
• Rationale: The physician performed a selective diagnostic study of both renal arteries. Since no intervention was performed, the diagnostic code is appropriate.

Scenario 2: Diagnostic Bilateral Selective Renal Angiogram Leading to Unilateral Renal Artery Angioplasty

• Patient Presentation: Patient with severe hypertension. Diagnostic bilateral renal angiogram reveals 80% stenosis of the right renal artery. Physician proceeds with angioplasty of the right renal artery. Left renal artery is normal.
• CPT Codes:
  • Physician: 37249-26 (for the angioplasty)
  • Facility: 37249-TC (for the angioplasty)
• Rationale: The diagnostic bilateral angiogram (36252) is bundled into the interventional procedure (37249) performed on the right renal artery. You would only bill the interventional code. The bilateral diagnostic portion is considered inclusive.

Scenario 3: Bilateral Renal Angiogram with Bilateral Renal Artery Stenting

• Patient Presentation: Patient with bilateral renal artery stenosis. Diagnostic angiogram confirms significant stenosis in both renal arteries. Physician performs stenting on both the right and left renal arteries.
  

  FAQ: Common Questions Answered

  What are the key CPT codes for renal ultrasound and Doppler studies in 2026?

  While many initially search for CPT codes related to renal ultrasound and Doppler studies, this comprehensive guide specifically focuses on the intricate billing landscape for renal artery angiography and associated interventional procedures for 2025 and illustrative 2026 projections. For detailed CPT codes pertaining to renal ultrasound and Doppler studies, it is recommended to consult dedicated resources or the latest CPT manual, as these fall outside the scope of this particular article.

  How do NCCI edits affect billing for combined renal angiography and stenting procedures?

  NCCI (National Correct Coding Initiative) edits are critical for accurate billing, especially when combining diagnostic and interventional procedures like renal angiography and stenting. Generally, NCCI edits are designed to prevent unbundling of services that are typically performed together. For instance, a diagnostic renal angiography (e.g., CPT 36251 or 36252) performed immediately prior to a therapeutic intervention (like stenting) on the same vessel during the same session is often considered an integral component of the interventional procedure and may be bundled. This means the diagnostic angiography might not be separately billable unless specific criteria are met, such as a distinct diagnostic study performed on a separate occasion or for a different clinical indication, which might then warrant a modifier (e.g., -59 or -XU). Always refer to the most current NCCI policy manual and specific edit pairs for precise guidance to ensure compliance and avoid denials.

  What are the maximum unit limits (MUEs) for common renal artery intervention CPT codes?

  Maximum Unit Edits (MUEs) are established by CMS to prevent the billing of an excessive number of units for a single CPT code on a given date of service. For example, as illustrated in our Quick Reference Guide, CPT code 36251 (Selective catheter placement, unilateral renal artery, diagnostic angiography) typically has an MUE limit of 1, reflecting its nature as a unilateral procedure. It is crucial to understand that MUE limits are subject to change by CMS and can vary based on the type of MUE (e.g., Practitioner, Durable Medical Equipment, or Outpatient Hospital). Providers must always consult the most current CMS MUE tables and guidelines to ensure accurate billing and prevent potential claim denials or audits.

  What components are typically included in the CPT codes for diagnostic renal artery angiography?

  The CPT codes for diagnostic renal artery angiography, such as 36251 for a unilateral study, are comprehensive and designed to encompass all standard components of the procedure. This typically includes the arterial puncture, the introduction of the catheter(s) into the renal artery, and all associated radiological supervision and interpretation (S&I) required to perform the diagnostic angiography. Therefore, these elements are generally not billed separately when performing a diagnostic renal artery angiogram, as they are considered integral to the primary CPT code.

External Resources & Authority Links

• For more detailed insights, refer to the official CMS Medicare guidelines.
• For more detailed insights, refer to the CMS guidelines.