CPT 93456Cardiology

R hrt coronary artery angio

CPT 93456 covers a diagnostic heart catheterization procedure where a cardiologist inserts a thin tube through blood vessels to examine the right side of the heart and take detailed X-ray pictures of the coronary arteries that supply blood to the heart muscle.

Showing rates for

National Average

Base Medicare rate

$1,040.59

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

5.9

PE RVU (NF)

25.12

MP RVU

1.15

Total RVU

32.17

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

NCCI bundling edits

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Billing tips

Verify that left heart catheterization was NOT performed - if both right and left heart cath with coronary angiography were done, use 93460 instead of 93456
Impact: Using wrong code could result in $200-300 payment difference and automatic denial upon audit review
Document all coronary arteries visualized with specific notation of injection technique, projections used, and findings for each vessel to support medical necessity
Impact: Incomplete documentation is the #1 cause of audits; comprehensive operative notes reduce denial risk by 75%
Ensure right heart catheterization component is separately documented with pressure measurements from all chambers accessed (RA, RV, PA, PCWP if obtained)
Impact: Missing hemodynamic data may trigger downcoding to coronary angiography-only code 93454, reducing payment by approximately $150-200
Bill radiological supervision and interpretation separately only if using modifier 26 in non-hospital settings; facility rate already includes S&I
Impact: Unbundling S&I when not appropriate results in immediate claim rejection and potential fraud investigation
Verify prior authorization requirements before scheduling - many Medicare Advantage and commercial payers require pre-authorization for catheterization procedures
Impact: Missing pre-auth results in 100% denial of $1040.59 payment with patient potentially responsible for entire cost
Use appropriate add-on codes for additional services like closure device placement (93580) or intravascular imaging when performed and documented separately
Failure to capture add-on services leaves $200-500 in legitimate revenue unbilled per case

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 93456 in 2025?

The 2025 Medicare national average payment for CPT 93456 is $1040.59 for both facility and non-facility settings. This rate is based on 32.17 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary by geographic locality based on the GPCI adjustments for your area.

What is the difference between CPT 93456 and 93460?

CPT 93456 includes right heart catheterization with coronary angiography but WITHOUT left heart catheterization. CPT 93460 includes BOTH right and left heart catheterization with coronary angiography. If the physician accessed the left ventricle or measured left heart pressures, 93460 is the correct code, not 93456.

Can CPT 93456 be billed with 93454 on the same day?

No, CPT 93456 and 93454 should not be billed together for the same session. Code 93456 already includes the coronary angiography component represented by 93454, plus adds the right heart catheterization. Billing both would be considered duplicate billing and will result in denial or recoupment.

What RVU value does CPT 93456 have for 2025?

CPT 93456 has a total RVU of 32.17 for 2025, consisting of 5.9 work RVUs, 25.12 practice expense RVUs, and 1.15 malpractice RVUs. This is the same for both facility and non-facility settings, which is unusual and reflects the global nature of this invasive cardiology procedure.

Does CPT 93456 require prior authorization from Medicare?

Traditional Medicare generally does not require prior authorization for 93456, though local MACs may have pre-service review requirements. However, Medicare Advantage plans typically DO require prior authorization. Always verify requirements with the specific payer before scheduling. Commercial insurance almost universally requires pre-authorization for cardiac catheterization procedures.

How do I bill for coronary angiography with only right heart catheterization?

CPT 93456 is specifically designed for this scenario - it is the appropriate code when performing coronary angiography combined with right heart catheterization but without left heart catheterization. Ensure documentation clearly shows right heart chambers accessed, pressure measurements obtained, and complete coronary angiography performed.

What modifiers are most commonly used with CPT 93456?

The most common modifiers for 93456 are modifier 26 (professional component only, used when physician doesn't own equipment), modifier TC (technical component for facility billing), and modifier 59 (distinct procedural service when medical necessity requires billing with other potentially bundled procedures). Modifier 52 may be used if the procedure was reduced or partially completed.