CPT code 75625 – Abdominal aortography billing and coding

Key takeaways

CPT code 75625 covers abdominal aortography supervision and interpretation (S&I) only, and catheter placement is coded separately.

When the same aortic injection also images bilateral iliofemoral runoff, report CPT 75630 instead of 75625.

CPT 75635 is a CT angiography code, so it replaces the catheter codes for a CT study and is never billed with them.

Modifier 26 is required when the radiologist interprets at a facility that owns the equipment, and modifier 59 separates companion codes from NCCI edits.

Medicare LCD L35092 defines the covered indications, including aortic aneurysm, dissection, and peripheral arterial disease.

Practice management software like Pabau submits claims through Claim.MD, so code and eligibility problems surface before the payer sees them.

CPT code 75625: Official descriptor and procedure overview

CPT code 75625 describes aortography, abdominal, by serialography, radiological supervision and interpretation. The parenthetical extension “with or without serialography, with or without delayed imaging” means the imaging method does not change the code. Rapid-sequence film and delayed acquisitions both fall under 75625. It does not cover catheter placement or contrast injection as procedural services. Those components are reported separately using the appropriate catheter placement codes from the 36000 series. An S&I code is reported alongside the procedural codes for the same study, never in place of them.

What the abdominal aortography code covers and excludes

CPT code 75625 covers imaging of the infrarenal abdominal aorta and its major branches, from the level of the renal arteries through the aortic bifurcation. A single code captures all contrast injections and image acquisitions needed to complete the aortographic study at that anatomical level.

What is included

• Contrast injection into the abdominal aorta at the infrarenal level
• All fluoroscopic image acquisitions, including delayed sequences
• Radiologist supervision and interpretation, including the written report
• Imaging of the aorta and its visceral/iliac branch origins at that level

What is excluded

• Catheter placement: Arterial access and selective catheter positioning are coded separately (CPT 36245, 36246, or 36247, by vessel order)
• Lower extremity runoff: A separate study of the femoral, popliteal, or tibial arteries is reported with CPT 75710 (unilateral) or 75716 (bilateral). Bilateral iliofemoral runoff filmed from the same aortic injection is reported with CPT 75630 instead of 75625
• Thoracic aorta: Any imaging proximal to the diaphragm falls under different codes (e.g., CPT 75600 for thoracic aortography)
• Renal or mesenteric selective injections: Selective injections into visceral branches require additional angiography codes beyond 75625

The distinction between 75625 and 75630 is the most common source of overcoding. When the aortic injection also images bilateral iliofemoral runoff, 75630 is the correct single code. Reporting 75625 plus 75710 or 75716 for that same runoff unbundles 75630 and triggers NCCI edit denials.

CPT 75635 is a different modality altogether. It is a CT angiography code, billed instead of the catheter codes when the study is done by CT. It is never combined with 75625, 75710, or 75716. The panel below sorts each scenario by what the report documents.

How the procedure is performed and documented

Accurate documentation is what separates a clean claim from a denial. The radiology report must capture every element payers look for to confirm the service was medically necessary and technically complete.

Procedural workflow

1. Arterial access: Percutaneous femoral, brachial, or radial artery puncture to introduce the sheath
2. Catheter positioning: Advancement of the catheter to the infrarenal aorta under fluoroscopic guidance
3. Contrast injection: Power injection of iodinated contrast material into the aortic lumen
4. Image acquisition: Rapid-sequence (serialographic) or digital subtraction angiography (DSA) images of the aorta and its branches
5. Delayed imaging (if needed): Additional acquisitions to capture slow-flow segments or collateral pathways
6. Report generation: The radiologist or interventionalist dictates a formal report describing technique, findings, and clinical impression

Documentation requirements

The radiology report must state the anatomical level of the injection and confirm the contrast went into the abdominal aorta. It must also describe the imaging findings and include the clinical indication. CMS and commercial payers reviewing CPT code 75625 claims look for that indication in the report itself, as well as in the order.

A report that is technically complete but lacks a mapped diagnosis will still be denied. The claim file must carry the matching ICD-10-CM code on the same line as 75625. The biller and the radiologist should confirm the diagnosis before submission.

Commonly confused and companion codes for CPT code 75625

Four codes sit close enough to 75625 that coders frequently pick the wrong one. Picking up the wrong code costs the practice money in either direction: Overcoding attracts audit attention, undercoding leaves reimbursement on the table.

Catheter placement codes and bundling rules

CPT 36247 describes selective catheter placement in a third-order or more selective branch. First-order placement is CPT 36245, and second-order placement is CPT 36246. Each is separately reportable alongside CPT code 75625 when the catheter goes beyond the aorta and the report documents that position.

NCCI edits do not bundle 36247 with 75625 as a hard edit, but they do bundle it with some companion angiography codes. Always verify the current NCCI table edition before billing, as edits are updated quarterly. The clean claim standard requires that any unbundled code pair be supported by documentation in the procedure note showing distinct procedural steps.

CPT 76937, ultrasound guidance for vascular access, may be reported separately when real-time ultrasound guides the arterial puncture. A permanent record of the imaging must be documented as well. Verify payer-specific policy before appending 76937, as some commercial payers bundle it with the interventional code.

Modifiers for CPT code 75625

Modifier selection on CPT code 75625 determines whether the claim pays at the full global rate, the professional component only, or the technical component only. Getting this wrong is one of the fastest routes to a zero-payment remittance.

Modifier policies are payer-specific and audit-sensitive. Verify modifier requirements against individual payer bulletins before submission, particularly for modifier 59, which some payers have replaced with X-modifiers (XE, XS, XP, XU).

Medicare coverage, LCD rules, and prior authorization

Medicare coverage for CPT code 75625 is governed by Local Coverage Determination (LCD) L35092, Diagnostic Abdominal Aortography and Renal Angiography. Its companion Billing and Coding Article, A56682, sets out the coding rules. Verifying insurance eligibility before scheduling reduces write-offs. Some Medicare Advantage plans add prior authorization requirements on top of original Medicare policy.

Covered indications

• Suspected or known abdominal aortic aneurysm requiring pre-procedural mapping
• Aortic dissection evaluation when CTA is contraindicated or non-diagnostic
• Peripheral arterial disease workup prior to revascularization
• Renal artery stenosis assessment when duplex ultrasound is inconclusive
• Mesenteric ischemia evaluation
• Pre-operative planning for aortic or iliac intervention

Non-covered indications

• Routine surveillance without documented clinical change
• Screening studies in the absence of signs or symptoms
• Duplicate imaging within a short interval without a change in clinical status

Prior authorization requirements for imaging codes vary by payer and Medicare Advantage plan. Do not assume that original Medicare’s no-auth policy extends to every Medicare Advantage product. Check payer-specific portals or use a clearinghouse with integrated medical billing compliance checks to flag plans that require authorization before the study date.

ICD-10-CM diagnosis codes that support medical necessity

Medicare reimbursement for CPT code 75625

Medicare Physician Fee Schedule reimbursement for CPT code 75625 is published through the CMS Physician Fee Schedule Look-Up Tool. Rates differ by component and setting.

National rates are adjusted by the Geographic Practice Cost Index (GPCI) for your locality. Practices in high-cost areas such as Manhattan or San Francisco receive a higher multiplier than those in rural MACs. Use the FastRVU lookup tool to pull work, practice expense, and malpractice RVU values for 75625 and apply your MAC’s conversion factor.

Commercial payer rates vary by contract and usually run above Medicare national rates. Bill at your full chargemaster rate and let the contractual adjustment settle the balance. Tracking payment velocity against expected reimbursement is a core part of revenue cycle management for radiology groups.

Common claim denial reasons and how to avoid them

CPT code 75625 claims are denied for a predictable set of reasons. Each one has a corrective step that, applied upstream, eliminates the denial before it happens. Understanding denial codes in medical billing is the first step to building a prevention workflow.

• Missing or mismatched ICD-10-CM code: The diagnosis on the claim does not match a covered indication in LCD L35092. Fix: Confirm the ICD-10-CM code with the ordering physician before claim submission. Then check it against the covered indications in Billing and Coding Article A56682.
• Incorrect bundling with 75630: Reporting 75625 plus separate runoff codes when 75630 is the correct all-inclusive code. Fix: Check the imaging report for runoff imaging before splitting codes. If the runoff came from the same aortic injection, use 75630.
• Missing modifier 26 in facility settings: Physician bills the global code while the facility also bills the TC. Fix: Establish a pre-billing checklist that verifies the place of service and confirms modifier 26 is appended to the physician claim.
• No prior authorization on Medicare Advantage plans: Some Medicare Advantage plans require authorization for imaging codes even when original Medicare does not. Fix: Automate payer-plan checks at scheduling and route plans requiring authorization to your prior auth queue.
• Modifier 59 without supporting documentation: Using modifier 59 to bypass an NCCI edit without a separate note or procedure description justifying the distinct service. Fix: Ensure the procedure note includes a separate narrative for each service reported with modifier 59.
• Timely filing violations: Radiology claims submitted outside the payer’s filing window. Fix: Build a charge capture cutoff rule in your billing software so no claim ages past 30 days post-service without a submission record.

Build a denial management workflow that reviews all 75625 remittances within 48 hours of payment posting. It catches underpayments and sets up timely appeals before the contractual deadline expires. The electronic remittance advice (ERA) carries the CARC and RARC codes that explain why a line paid short or denied. That takes the guesswork out of the appeal letter.

Billing tips for radiology practices: Charge capture and coding best practices

Interventional radiology practices lose more revenue to missed charges than to outright denials. A procedure happens and the report gets dictated. Then the charge never reaches the billing queue, because no one mapped the report to the CPT code in time. These four habits keep that from happening.

• Map report keywords to charge triggers: Configure your billing system to flag any signed report containing “abdominal aortography” or “aortogram.” Route it to a coder for charge assignment within 24 hours of signature.
• Build a bundling conflict check: Any encounter that pairs 75625 with a lower extremity angiography code should trigger an automatic review. The reviewer confirms whether 75630 should replace the combination. This prevents NCCI edit denials on the front end rather than appealing them on the back end.
• Separate the S&I charge from the procedural charge: 75625 is a radiology S&I code, not a procedural code. Ensure your charge router assigns it to the radiologist or interventionalist’s provider record, not to the facility’s procedural charge sheet, to avoid duplicate billing.
• Track modifier 26 by place of service: A charge for 75625 from a hospital outpatient setting without modifier 26 will create a duplicate payment situation. Lock the modifier assignment to the place-of-service code in your billing software rules.

How claims management software prevents CPT code 75625 denials

Without a checking step, a 75625 claim is only as clean as the coder’s last read of the report. A missed runoff study or a missing modifier 26 comes back weeks later as a denial, and someone has to rework it by hand.

Practice management software like Pabau submits claims electronically through Claim.MD, a US clearinghouse connected to over 4,000 payers. Pabau’s claims tools for billing teams return real-time eligibility responses. The 835 remittance files feed straight into denial tracking, so a short payment on a 75625 line shows up the day it posts.

A complete superbill closes the loop. When it captures the access site, catheter position, contrast volume, and imaging levels, the coder can code the encounter without a report call-back. The result is fewer resubmissions and faster payment on every aortography study.

Automate claim submission for radiology and interventional procedures

Pabau submits CPT code 75625 claims electronically through Claim.MD and tracks every remittance in one place. See how it works for your interventional radiology practice.

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Conclusion

CPT code 75625 rewards coders who read the report before they pick the code. Check whether the runoff came from the aortic injection, and whether the study was done by catheter or by CT. Those two questions decide between 75625, 75630, and 75635.

Then lock down the two errors that cost the most. Append modifier 26 on every facility-based claim, and map each diagnosis to the covered indications in LCD L35092. The trade-off is a few extra minutes per report, which costs far less than working a denial.

Book a demo to see how Pabau helps interventional radiology practices submit clean 75625 claims and track every remittance.

Continue your research

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Want to decode your remittance files faster? Claim.MD clearinghouse guide covers ERA parsing, denial CARC codes, and secondary claim submission.

Building a credentialing workflow for your IR group? How to get credentialed with insurance companies walks through the payer enrollment process step by step.

Denials piling up on your radiology claims? Denial management in healthcare shows how to triage, appeal, and prevent repeat denials.

Not sure where the diagnosis sits on the claim? The 837 claim file explains each loop and segment a payer reads.

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