Healthcare Underpayments: Identification, Recovery & Prevention

Healthcare underpayments are one of the most significant—and least visible—sources of revenue loss for hospitals and health systems, often going undetected in standard workflows. Unlike denials, which trigger workflows and demand attention, underpayments often go unnoticed, quietly reducing margins across thousands of claims.

For many organizations, the challenge isn’t just recovering underpayments—it’s identifying them in the first place.

This guide breaks down everything you need to know about healthcare underpayments, including how they occur, how much revenue is at risk, and how leading health systems are addressing the problem.

What Are Healthcare Underpayments?

An underpayment occurs when a payer reimburses less than the contractually agreed or clinically appropriate amount—without issuing a formal denial.

In most cases:

• The claim is processed
• Payment is posted
• The balance reaches zero
• The account is considered “resolved”

However, the reimbursement is incorrect.

This makes underpayments fundamentally different from denials—and far more difficult to detect.

This makes underpayments fundamentally different from denials—and far more difficult to detect. To understand this more clearly, see how a healthcare underpayment is defined and why it is so difficult to catch.

Why Underpayments Are So Hard to Detect

Most revenue cycle workflows are designed to identify open balances, denials, and aging accounts receivable. Underpayments bypass all three.

Common reasons they go unnoticed:

• Claims close at zero balance
• Adjustments appear contractually valid
• No denial code is triggered
• High claim volumes make manual review impractical

At scale, even small discrepancies can result in millions in lost revenue.

At scale, even small discrepancies can result in millions in lost revenue, highlighting the broader impact of payer underpayments on hospital margins.

Where Underpayments Typically Occur

In many cases, underpayments can happen at multiple points in the adjudication process. Common sources include:

• Contract misinterpretation or pricing errors
• DRG or coding discrepancies
• Payer policy misapplication (bundling, modifiers, etc.)
• Misclassified denials adjusted to zero balance
• Line-item payment errors within otherwise “clean” claims

These issues are often systemic—affecting entire populations of claims rather than isolated cases.

Underpayments vs. Denials: Why the Difference Matters

Although both represent lost revenue, underpayments and denials require completely different approaches.

DenialsUnderpaymentsTrigger workflowsTypically invisibleCreate open balancesClose at zero balanceDriven by rejection codesRequire contract validationManaged proactivelyOften found retrospectively

Organizations that rely solely on denial management processes typically miss a large portion of recoverable underpayments.

Organizations that rely solely on denial management processes often miss significant revenue, especially when comparing underpayments vs. denials in healthcare.

How Much Revenue Is at Risk?

Industry data consistently shows that underpayments represent a meaningful percentage of net patient revenue:

• Commercial payer underpayments may account for 1%–3% (or more) of net patient revenue
• Government reimbursement gaps continue to widen
• Revenue leakage from denials and underpayments continues to grow year over year

For large health systems, this can translate into millions—or tens of millions—of dollars annually in missed revenue.

For a deeper look at performance benchmarks, review current healthcare underpayment benchmarks and how much revenue hospitals are losing.

How to Identify Underpayments

Identifying underpayments requires a fundamentally different approach than traditional revenue cycle processes.

Key components include:

• Contract-aware payment validation
• DRG and coding review
• Post-adjudication claim analysis
• Zero-balance account review
• Cross-payer pattern detection

This process is often referred to as an underpayment audit.

This process is commonly referred to as a healthcare underpayment audit, which outlines how hospitals systematically identify missed revenue.

The Importance of Zero-Balance Claim Review

One of the most overlooked sources of underpayments is zero-balance accounts.

Once a claim is closed:

• It exits standard workflows
• It is no longer actively reviewed
• Any discrepancies remain hidden

Without a structured zero-balance review process, a significant portion of underpayments will never be identified.

Without structured review, many discrepancies remain hidden—particularly in zero-balance claims that appear resolved but may still be underpaid.

Key Terminology: Payment Variance vs. Underpayment

Understanding the terminology is critical for building an effective strategy:

• Contractual Adjustment: Expected write-off based on contract
• Payment Variance: Any discrepancy between expected and actual payment
• Underpayment: A recoverable variance caused by payer error
• Zero-Balance Account: A claim that appears resolved but may still be underpaid

Clear definitions help ensure teams focus on actionable opportunities, not noise.

Understanding the distinction between payment variance vs. underpayment is critical for focusing on true recovery opportunities.

How to Recover Underpayments

Once identified, underpayments must be validated and pursued through payer-specific workflows.

A successful recovery process includes:

• Contract validation
• Supporting documentation
• Correct dispute pathway selection
• Timely filing and tracking
• Escalation when needed

Many organizations struggle not with identifying underpayments—but with converting findings into cash.

A structured process for appealing healthcare underpayments is essential to converting identified discrepancies into recovered revenue.

Preventing Future Underpayments

Recovery alone isn’t enough. Leading health systems focus on prevention strategies, including:

• Maintaining current contract intelligence
• Monitoring payer performance
• Reviewing EOBs systematically
• Tracking denial patterns for underpayment signals
• Implementing zero-balance review workflows
• Feeding recovery insights back into operations

Leading organizations focus not only on recovery but also on strategies to prevent payer underpayments before they occur.

Why Underpayments Are Increasing

Several industry trends are driving increased underpayment risk:

• Payer consolidation
• More complex contracts
• Growth in Medicare Advantage
• Algorithmic adjudication systems
• Regulatory and policy changes
• Revenue cycle staffing constraints

These factors are making underpayments more frequent—and harder to detect.

These challenges are being driven by broader industry trends, including why healthcare underpayments are increasing across payer environments.

Turning Insight Into Recovery

Healthcare underpayments represent revenue that has already been earned—but not fully received.

Organizations that address the problem effectively typically:

• Use analytics to evaluate full claim populations
• Establish dedicated underpayment workflows
• Track recovery performance separately from denials
• Invest in specialized expertise and technology

How Revecore Helps Health Systems Recover Underpayments

Revecore helps hospitals and health systems identify and recover underpayments at scale through:

• Advanced analytics and proprietary detection technology
• Deep expertise in payer contracts, DRG validation, and coding
• End-to-end recovery workflows, from identification through appeal and payment posting
• Ongoing insights to reduce future underpayment risk

Learn how Revecore can help you recover underpayments and protect your revenue.