Healthcare claims oversight refers to a plan sponsor's process of systematically reviewing medical and pharmacy claims paid on a self-funded health plan for errors, fraud and overbilling. Most employers rely on their TPA to catch errors, but independent audits routinely find that 3 to 7 percent of paid claims contain recoverable overpayments.
A mid-sized manufacturer in Ohio discovered last year that its TPA had been paying a local hospital system at billed charges for nearly three years. The contract clearly called for network rates. The error cost the plan over $1.1 million before anyone noticed. The plan sponsor was the employer. No one at the company had reviewed a single Explanation of Benefits.
Plan Sponsors Are Flying Blind on Claims
Most employers have no systematic process to verify that the claims paid on their health plan are accurate, appropriate or even contractually permitted.
The assumption is that the TPA handles it. The TPA assumes it is processing claims per the plan document and network contracts. In practice, neither party is actively looking for errors on a sustained basis. That gap between assumption and reality is where overpayments live.
Self-funded plans cover roughly 65 percent of all privately insured workers in the United States, according to the Kaiser Family Foundation. Collectively, employer-sponsored plans pay trillions in claims each year.
The typical process remains largely unchanged: a TPA processes claims, issues EOBs, and coordinates payments, while employers often rely on summary reports rather than reviewing claim-level activity.
Why the Problem Exists
The current self-funded model can make it challenging to maintain continuous, detailed claims oversight.
TPAs are generally compensated for claims administration rather than claims accuracy. As a result, independent claims reviews can provide an additional layer of oversight and help identify issues that may not be apparent through routine claims processing alone.
As a result, many employers rely primarily on vendor reporting and may have limited ability to independently validate claim accuracy.
The Real Cost of Inadequate Claims Oversight
Claims leakage, the portion of plan spend lost to errors, fraud, waste and overbilling, typically runs between 3 and 7 percent of total paid claims, based on industry auditing benchmarks published by auditing firms and benefits consultants.
For a self-funded employer spending $10 million annually on health claims, a 3% to 7% payment error rate could represent $300,000 to $700,000 in potential payment errors or avoidable claims costs, depending on the nature of the errors and whether they can be recovered.
Self-funded employers are facing greater scrutiny over how they oversee health plan spending. Benefits attorneys, including the Groom Law Group, have noted that ERISA investigations increasingly focus on whether plan sponsors have prudent oversight processes.
In Lewandowski v. Johnson & Johnson, participants alleged the employer failed to manage pharmacy spending prudently. Although the court dismissed the fiduciary claims on standing grounds without ruling on the merits, the case highlighted growing expectations for stronger health plan oversight and governance.
What's Actually Happening Behind the Scenes
Claims adjudication is a high-volume, rules-based automated process and automated rules can be misconfigured, outdated or simply absent.
Duplicate Claims
A provider submits a claim. A clearinghouse resubmits it. The TPA pays it twice. Duplicate logic in adjudication systems is supposed to catch this, but logic exceptions exist. Retrospective audits by independent firms routinely recover duplicate payments as one of the most common error categories.
Upcoding and Unbundling
A facility bills a complex evaluation and management visit when the documentation supports a lower-level code. Or a surgical procedure is billed as multiple component codes when a single bundled code should apply. These errors inflate reimbursement and are rarely flagged by TPA automated edits without specific clinical logic overlays.
Coordination of Benefits Failures
When a participant has coverage under two plans, the primary carrier is supposed to pay first. COB errors occur when the TPA lacks current information about secondary coverage or fails to recover from the other carrier. These can result in the self-funded plan overpaying as both primary and secondary payer simultaneously.
Contract Pricing Errors
Network contracts specify allowed amounts, discount thresholds, carve-outs and fee schedules. When a TPA's pricing file is not updated to reflect contract renegotiations, or when a claim routes to an out-of-network provider incorrectly classified as in-network, the plan overpays. This category of error can be large per-claim and is difficult to detect without comparing paid amounts against the actual contract.
Billing Fraud and Abuse
This is distinct from honest errors. Some providers systematically bill for services not rendered, upcode routinely or fabricate diagnoses. FBI and OIG enforcement data show healthcare fraud costs the U.S. system tens of billions annually. Self-funded plans are targets because they often lack the robust fraud analytics that large commercial carriers deploy.
Why Current Approaches Are Not Enough
Most TPAs have internal audit functions and claim editing software. These catch a portion of errors before payment (pre-payment editing) or flag obvious duplicates. But they are not independent, they are not comprehensive, and they are not designed to surface systemic problems in the TPA's own adjudication.
Think of it this way. Asking your TPA to audit its own claims accuracy is like asking a restaurant to grade its own health inspection. The restaurant may have good intentions and internal protocols. But the incentive structure makes objective self-assessment structurally difficult.
How to Fix It: A Practical Oversight Framework
Plan sponsors can establish meaningful claims oversight without replacing their TPA, using a layered approach that combines contractual rights, independent review and ongoing monitoring.
Red Flags That Signal Your Plan Has a Claims Oversight Problem
The ROI of Getting Claims Oversight Right
Independent claims audits return between $3 and $12 for every $1 spent on the audit, based on published recovery ranges from auditing firms and benefits consulting organizations.
A one-time retrospective audit on a plan with $15 million in annual claims typically identifies $300,000 to $900,000 in recoverable overpayments. Recovery depends on contractual provisions with the TPA and the age of the errors found, but most TPA agreements allow recovery of documented overpayments.
The Milliman actuarial consulting firm has documented that plans with active oversight programs spend 2 to 5 percent less on claims over time compared to unmonitored plans, controlling for demographics and benefit design.
Regular claims audits don't just help find billing errors and save money. They also create a record showing that the employer was actively monitoring the health plan. If questions ever arise about how the plan was managed, that documentation can be valuable. In many cases, the cost of dealing with legal disputes or regulatory investigations can be far greater than the cost of maintaining a proactive claims oversight program.
Conclusion and Next Steps
Healthcare claims oversight is not a luxury or a compliance checkbox. It is one of the most financially consequential activities a self-funded plan sponsor can undertake.
The technology to monitor claims accurately in near-real time has existed for years. The legal obligation to do so under ERISA has existed for decades. What has changed is the enforcement environment. DOL investigations are broader. Participant lawsuits are more specific about fiduciary process failures. Stop-loss carriers are paying closer attention to what was reviewed before a large claim was paid.
Start with a baseline retrospective audit. Review your TPA agreement for audit rights. Assign someone in finance or legal to own the oversight process. Those three steps will put your plan ahead of a large majority of self-funded employers in the country.
Frequently Asked Questions
What is healthcare claims oversight for a self-funded plan?
Healthcare claims oversight is the process of checking that medical and pharmacy claims are paid accurately and according to plan rules. It includes claims audits, eligibility checks, coordination of benefits (COB), and monitoring TPA performance.
Is a plan sponsor legally required to audit claims under ERISA?
ERISA does not require a specific audit schedule, but it requires plan fiduciaries to monitor plan operations and service providers. Regular claims reviews help demonstrate prudent oversight.
How much does an independent claims audit cost?
Costs vary by plan size and scope. Retrospective audits often range from $15,000 to $50,000, while some firms work on a contingency basis and only charge if they recover overpayments.
What percentage of claims typically contain errors?
Industry benchmarks suggest that 3% to 7% of paid claims contain recoverable errors, including duplicate payments, pricing mistakes, eligibility issues, and billing errors.
Can the plan recover overpayments from the TPA?
It depends on the TPA agreement and the type of error. Many contracts allow recovery of overpayments, but recovery deadlines and conditions vary.
What is the difference between a retrospective audit and concurrent review?
A retrospective audit reviews claims after they are paid to identify recoverable overpayments. Concurrent review examines claims before or shortly after payment to prevent errors from occurring.
Does the CAA 2021 change claims oversight obligations for employers?
The CAA 2021 increased transparency requirements but did not require routine claims audits. It reinforced that plan sponsors are responsible for understanding and monitoring healthcare spending.
How do I know if my TPA agreement allows an independent audit?
Review your ASO or ASA agreement for audit rights, data access, and recovery provisions. If these rights are unclear, consider negotiating stronger audit language at your next contract renewal.
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