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What 10,000 Denied Claims Revealed: A Revenue-Cycle Case Study

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A continuing revenue-cycle improvement initiative with a multispecialty medical group of approximately 150 providers.

At a Glance
10,000+
rejected and denied claims analyzed

$1.25M*
in claims identified for recovery

~95%
electronic payments and remittances

Incomplete provider enrollment identified as the largest recurring denial problem
Credentialing staffing and payer responsibilities reorganized
Reactive claims management replaced with a financially prioritized approach

* $1,250,000 in claims identified for recovery. Claims identified for recovery are potential reimbursement, not cash collected.

The Challenge

A successful multispecialty medical group with approximately 150 providers had a backlog of more than 10,000 rejected and denied claims. Those claims and the problems behind them were already present when the engagement with The Valletta Group began. Enrollment requirements differed for each provider depending on location, specialty, and insurance payer. Delayed enrollment, coding discrepancies, and inconsistent reimbursement procedures created substantial financial exposure.

More billing staff alone would not have answered the practice’s real questions: why claims were being denied, and how to keep the same problems from recurring.

Finding the Root Causes

The Valletta Group analyzed the denials by provider, payer, location, date of service, coding issue, and financial exposure.

Provider
Payer
Location
Date of service
Coding issue
Financial exposure

The largest recurring problem was incomplete provider enrollment. The analysis showed which providers were affected, which payers were responsible, and where potentially recoverable revenue was concentrated.

Timing matters with enrollment
Medicare, for example, generally lets a physician bill retrospectively for no more than 30 days before the enrollment effective date, and only when circumstances prevented enrolling sooner.1

In this engagement, the practice retained responsibility for enrollment. Valletta supplied the information it needed to prioritize corrective action.

The analysis also uncovered payer-specific coding denials. Working through these with the practice’s staff helped separate coding errors from coverage restrictions and enrollment deficiencies.

Article Highlight
Article Highlight
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Thousands of individual claim denials were symptoms of a smaller number of recurring operational problems. Identifying those problems made corrective action measurable and manageable.

Modernizing Payment Workflows

Valletta identified opportunities to replace paper checks and manual remittance processing with electronic funds transfer (EFT) and electronic remittance advice (ERA). Working with Valletta, the practice reached approximately 95% electronic payments and remittances. For comparison, the 2025 CAQH Index, a national survey of health plans and providers, reports fully electronic adoption across the medical industry of 78 percent for claim payment and 87 percent for remittance advice.2

Electronic adoption
This practice: payments and remittances~95%
Medical industry: remittance advice (ERA)87%
Medical industry: claim payment (EFT)78%
Industry figures: 2025 CAQH Index, fully electronic adoption.2

Based on Valletta’s experience with other practices, manual processing takes considerably longer than electronic processing. The transition gave the practice the opportunity to redirect staff toward more valuable revenue-cycle work.

Identifying Changes in Payer Behavior

Valletta also discovered that certain insurers had substantially curtailed or discontinued previously established out-of-network reimbursement. These changes had not been fully recognized internally. Once the altered payment patterns were identified, leadership could reconsider whether continuing to treat patients under the affected out-of-network arrangements still made financial sense.

Working Around Software Limitations

The practice’s management software complicated self-pay balances, patient statements, and patient payment posting. Instead of waiting for vendor updates, Valletta and the practice established workable procedures using the existing technology, which allowed patient billing and collection to continue more efficiently.

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Valletta and the practice established workable procedures using the existing technology.

Where Things Stand

This case study covers two years of work, and the engagement is continuing.

Payer responsibilities have been reorganized, and claims management that was once reactive is now prioritized by financial impact. The practice also added staff to its credentialing team and now orders that team’s work by its effect on collections.

Practice staff reviewing paperwork together in an office

Credentialing will keep needing attention. The group is growing and continues to add providers, and each new provider has to be credentialed and enrolled correctly with each payer, so this is continuing work rather than a one-time fix.

Every practice is different, and results will vary. What carries over is the method:

1
Sort the denials

2
Find the recurring causes

3
Rank them by financial exposure before deciding what to fix first

The Valletta Group can help your practice find out what is behind its denials.

Talk to Our Billing Team

Sources

  1. 42 CFR § 424.521(a), Request for payment by physicians and other suppliers. A separate 90-day window applies to Presidentially declared disasters.
  2. CAQH. 2025 CAQH Index Report: Executive Report, Medical Plan Adoption of Fully Electronic Administrative Transactions.

This case study describes one engagement and does not identify the client. Results vary by practice. Revenue identified for recovery is not a guarantee of payment.

About the Author: The Valletta Group

The Valletta Group is a medical billing company committed to serving the true needs of physicians and medical groups. Beyond providing expert services to our clients, we also strive to be a valuable online resource for medical providers, practice managers, billers, coders, students, and all others in need of revenue cycle management information. We aim to simplify the complex world of medical billing by providing free, industry-leading content.