CPT 93454Cardiology

Coronary artery angio s&i

CPT 93454 covers the imaging and interpretation portion of coronary angiography, where doctors use X-ray technology to visualize the blood vessels supplying the heart to detect blockages or narrowing.

Showing rates for

National Average

Base Medicare rate

$835.83

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

4.54

PE RVU (NF)

20.42

MP RVU

0.88

Total RVU

25.84

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Verify that 93454 is billed only for the S&I component; if billing for the complete procedure including catheter placement, use combination codes like 93458 instead
Impact: Prevents unbundling denials that can result in 100% claim rejection and potential audit flags; combination codes may reimburse at $1,200+ vs. separate component billing
Document all coronary vessels visualized including dominance pattern, collateral circulation, and specific stenosis percentages in each coronary segment using standardized nomenclature
Impact: Reduces audit risk and supports medical necessity; inadequate documentation is the #1 reason for retrospective denials averaging $835.83 per claim
Bill 93454 with appropriate injection codes (93567 for selective coronary angiography injection) to capture complete reimbursement for services rendered
Impact: Adds $150-250 in additional reimbursement when properly documented; these codes are not bundled when clinical circumstances support separate billing
Ensure time-of-service documentation clearly separates diagnostic angiography from any subsequent intervention to support billing both 93454 and PCI codes when applicable
Impact: Enables billing of intervention codes (92920-92944) in addition to diagnostic code when not bundled; can add $1,500-3,000 per case
For Medicare patients, verify LCD/NCD coverage criteria are met including appropriate indications such as angina, abnormal stress test, or acute coronary syndrome
Impact: Prevents medical necessity denials; approximately 15% of 93454 denials stem from lack of documented medical necessity
When billing in facility setting, ensure institutional claim includes corresponding procedure code to avoid coordination of benefits issues and split billing problems

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 93454 in 2025?

The 2025 Medicare national average reimbursement rate for CPT 93454 is $835.83 for both facility and non-facility settings. This rate is calculated using 25.84 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual reimbursement varies by geographic locality due to GPCI adjustments.

Can CPT 93454 be billed with cardiac catheterization placement codes?

No, CPT 93454 should not be billed separately with comprehensive cardiac catheterization codes (93452-93461) as it is bundled into those procedures. Instead, use combination codes like 93458 (cath placement with coronary angio and LV angio) or 93455 (cath placement with coronary angio only) which include both the catheterization and the S&I components.

What RVUs are assigned to CPT 93454 for 2025?

CPT 93454 has 25.84 total RVUs for 2025, comprising 4.54 work RVUs, 20.42 practice expense RVUs (both facility and non-facility), and 0.88 malpractice RVUs. These values are from the CMS Physician Fee Schedule RVU25A released December 23, 2024.

When should I use modifier 26 with CPT 93454?

Modifier 26 is rarely used with 93454 because this code already represents only the supervision and interpretation (professional) component. Use modifier 26 only in unusual situations where the S&I component needs to be distinguished from technical components in split billing arrangements between facilities and physicians.

What documentation is required to bill CPT 93454?

Required documentation includes a complete written interpretation report detailing all coronary vessels visualized, stenosis percentages, coronary dominance, TIMI flow grades, collateral circulation, and clinical impressions. The report must be signed by the interpreting physician and stored images must be retrievable per retention requirements.

Can CPT 93454 be billed with PCI codes on the same day?

Yes, but with important considerations. When diagnostic angiography (93454) precedes a decision to perform PCI during the same session, both may be billed if documentation clearly shows the diagnostic study was a separate decision-making procedure. Append modifier 59 or XU to 93454 and ensure documentation supports that the diagnostic angiography was not simply pre-procedural imaging for a planned intervention.

What are common denial reasons for CPT 93454?

The most common denials include: bundling with comprehensive cardiac catheterization codes when billed separately; medical necessity issues due to inadequate documentation of clinical indication; incomplete interpretation reports missing required elements like vessel dominance or stenosis quantification; and duplicate billing with other coronary angiography or injection codes performed the same day.