What Was Causing 1 in 4 Cardiology Imaging Claims to Be Delayed?
A hospital-affiliated cardiology group in Ohio couldn't understand what was happening.
The practice had invested nearly $1.8 million into expanding its cardiac imaging program, adding advanced cardiac CT capabilities and increasing nuclear stress testing capacity.
Patient volume increased by 31%.
Imaging studies increased by 27%.
Physician productivity reached record levels.
Yet reimbursement was moving in the opposite direction.
The CFO noticed something alarming during a quarterly revenue review.
More than $680,000 in cardiology imaging claims were sitting unpaid beyond 60 days.
At first glance, denial rates looked normal.
Only 6.8% of claims were denied.
But a deeper analysis revealed a much larger problem:
Nearly 1 in 4 cardiology imaging claims were being placed into payer review status before adjudication.
The claims weren't denied.
They weren't approved.
They were simply stuck.
In April 2025, MBW RCM was engaged to investigate the growing payment delays affecting echocardiograms, nuclear stress tests, cardiac CT angiography, and cardiac MRI procedures.
Within 90 days, we identified the root cause, recovered over $512,000 in delayed reimbursements, and reduced imaging claim delays by 64%.
Client Overview
The client was a hospital-owned cardiology practice operating three outpatient imaging locations and serving approximately 18 cardiologists.
Specialty: Cardiology Imaging Billing Services
Location: Ohio, US
Monthly Imaging Volume: 2,300+ Studies
Annual Imaging Revenue: $14.7 Million
Our Service: Cardiology Revenue Cycle Optimization & Denial Prevention
The Problem Wasn't Billing
It Started in Scheduling.
During our audit, we discovered that schedulers were obtaining authorizations using preliminary physician orders before final imaging protocols were selected.
For example:
A patient scheduled for a coronary CTA initially received authorization for a standard CT procedure.
Before the exam, the cardiologist upgraded the order to a more complex CTA with 3D reconstruction.
The authorization was never updated.
The study was performed correctly.
The claim was coded correctly.
But the authorization no longer matched the procedure performed.
The payer automatically flagged the claim for clinical review.
No denial.
Just a 45-to-90-day delay.
When we expanded the audit, we found this issue affecting hundreds of imaging claims.
What We Found
Challenge 1: Authorization Mismatches Were Triggering Silent Reviews
Our audit revealed that 38% of delayed cardiac CT and MRI claims contained authorization discrepancies.
Common findings included:
Authorized CPT did not match billed CPT
Imaging location changes were not reported to payers
Service dates exceeded authorization windows
Approved study types differed from performed procedures
Each discrepancy triggered manual payer intervention.
Challenge 2: Nuclear Stress Tests Lacked Medical Necessity Language
Several major commercial payers had implemented stricter review criteria for myocardial perfusion imaging.
Cardiologists documented symptoms appropriately.
However, documentation often failed to include the specific payer-required language supporting medical necessity.
Claims entered clinical review queues and remained there for weeks.
Challenge 3: Professional and Technical Components Were Out of Sync
The hospital billed the technical component.
The physician group billed the professional interpretation.
In many cases:
One claim was submitted immediately
The companion claim was delayed
This created duplicate claim investigations and payment holds.
Challenge 4: No One Was Monitoring Pended Claims
The practice tracked denials aggressively.
But there was no workflow for claims classified as:
Medical review pending
Documentation requested
Authorization validation review
Clinical utilization review
Claims simply aged inside payer systems without follow-up.
Our Approach
Rather than focusing on denied claims, we built a dedicated imaging-delay recovery project.
Analysis
| Root Cause Identified | Corrective Action |
|---|---|
| Authorization CPT mismatches | Implemented final-order verification before claim submission. |
| Nuclear imaging medical necessity reviews | Created payer-specific documentation templates for cardiologists. |
| Split billing discrepancies | Established coordinated professional and technical billing workflows. |
| Unmonitored payer review claims | Built a cardiology imaging aging dashboard tracking all pended claims over 15 days. |
| Documentation requests overlooked | Created centralized work queues with escalation triggers. |
Results
$512,400 Recovered
Delayed claims sitting in payer review queues were successfully resolved and reimbursed.
64% Reduction in Delayed Imaging Claims
The percentage of claims entering payer review dropped from 24.7% to 8.9%.
41-Day Reduction in Payment Lag
Average reimbursement time for advanced imaging procedures improved significantly.
97.2% Clean Claim Rate
Cardiology imaging claims reached the highest first-pass acceptance rate in the organization's history.
$1.1 Million Improvement in Cash Flow Visibility
Leadership gained real-time visibility into delayed reimbursement trends across all imaging modalities.
Reduced Administrative Burden on Cardiologists
Documentation requests sent directly to physicians declined by 58%.
Conclusion
The practice initially believed denials were hurting revenue.
The real problem was much harder to see.
Hundreds of cardiology imaging claims were becoming trapped in payer review workflows because of authorization mismatches, medical necessity documentation gaps, and disconnected billing processes.
By addressing the operational failures occurring before claims reached the payer, MBW RCM helped the organization recover over half a million dollars, accelerate reimbursements, and restore confidence in its growing cardiac imaging program.
🗣️ "What surprised us most wasn't the denials. It was how much money was sitting in payer review status without anyone realizing it. Once MBW exposed the bottlenecks, the financial impact was immediate." – Director of Revenue Cycle Operations
