What is the most common reason for cardiology billing denials?

Prior authorization failure is the leading cause. The procedure happens without an approved pre-auth, or the auth number isn’t included on the claim. Medical necessity disputes and CPT code errors follow closely behind.

Which cardiology CPT codes get denied most often?

The highest-denial codes are 93306 (echocardiogram with Doppler), 93015 (complete stress test), 78452 (myocardial perfusion SPECT), 93454 (coronary angiography), and 93000 (ECG when billed with certain E&M visits). These codes have strict documentation requirements and frequent NCCI bundling edits.

How long does a practice have to appeal a cardiology claim denial?

Medicare gives you 120 days from the remittance date to file a first-level redetermination. Commercial payers typically allow 90 to 180 days. Missing the deadline forfeits your right to appeal, so track every denial date from the moment it’s received.

What’s a good clean claim rate for a cardiology practice?

Target 95% or higher. Rates below 90% usually mean there’s a systemic issue in eligibility verification, prior auth, or coding that needs to be fixed at the process level rather than claim by claim.

Can cardiology billing denials be prevented entirely?

Not entirely, but most are preventable. The industry benchmark for a well-managed cardiology practice is a denial rate below 5%. Most practices are at 10–15%, which means more than half their denials are fixable with better front-end and coding workflows.

What documentation do payers need to approve a cardiology claim?

How does Qualigenix help cardiology practices reduce denials?

Qualigenix manages the full denial prevention cycle: eligibility checks, prior auth tracking, cardiology-specific coding, claim scrubbing, and denial appeals. We work with 275+ practices across 38+ specialties, integrate with 133+ EMRs, and achieve a 98% claim accuracy rate. New practices onboard in as few as 6 days.

Cardiology Billing Denials: How to Prevent Them (2026)