The Missing Piece in Claims Transparency

TABLE OF CONTENTS

A self-funded hospital system trusted its TPA's self-reported claims accuracy of 100%, year after year. An independent audit of a stratified sample of roughly 200 medical claims told a different story.

Financial accuracy landed near 96.8% and payment accuracy at 96.1%, both below the 98% service level agreement in the contract. The plan had data. Nobody outside the TPA had checked whether the data was true.

Key Takeaways

Transparency is not verification: Claims data, pricing files and TPA reports show what was paid, but they do not confirm that payments were calculated correctly.

Independent audits tell a different story: TPA-reported error rates are typically low, yet independent reviews frequently identify financial and payment accuracy below contracted performance standards.

Most claims are never independently reviewed: Self-funded plans often examine only a small sample of claims each year, usually through the TPA's own audit process rather than an independent review.

The fiduciary responsibility remains with the employer: Under ERISA Section 404, plan sponsors are responsible for ensuring claims are paid accurately, even when every claim is processed by a TPA.

Continuous oversight closes the gap: Ongoing claims monitoring and independent verification provide the accountability needed to confirm that what the plan was told matches what actually occurred.

Data transparency improves visibility, but visibility alone does not prevent payment errors. Combining transparent claims data with continuous, independent oversight gives plan sponsors the evidence needed to reduce financial leakage, strengthen fiduciary governance and meet ERISA expectations.

What Claims Data Transparency Actually Means

Claims data transparency is access to claims pricing, utilization or payment information, not verification that the information is accurate. Plan sponsors often equate transparency with oversight because both involve data. They are not the same function.

Transparency answers "what did we pay." Oversight answers "should we have paid that." A plan can have full access to its claims feed and still have no process for catching a duplicate payment, an ineligible dependent or a specialty drug billed above the contracted rate.

The Transparency in Coverage rule illustrates the gap well. It produced what has been called one of the largest government-mandated data releases in history, yet researchers found the machine-readable files inconsistent in structure, thin on index information and often too large for a standard computer to process. Access without usability is not transparency in any meaningful sense.

Why the Gap Exists

The gap exists because TPAs report their own performance, and self-reporting carries no independent verification. A TPA's contract may guarantee 99% payment accuracy while the TPA's own internal data shows a 1.4% claims processing error rate, a discrepancy that surfaced in one carrier's administrative services agreements. The guarantee and the reality are not required to match unless someone checks.

TPAs also lack a direct financial incentive tied to plan cost outcomes. Their compensation structure is generally built around processing volume and service fees, not around minimizing the plan's total spend, so error prevention competes with throughput.

Most plans compound the problem by reviewing claims infrequently. Annual audits built into ASO agreements often sample only 300 to 350 claims out of hundreds of thousands processed in a year. A snapshot that small can miss systemic issues entirely.

The Real Cost of Assuming Transparency Equals Oversight

Unverified claims errors compound into six- and seven-figure losses for mid-size self-funded plans. Industry claims audit findings put TPA error rates between 3% and 10% of processed claims, well above the 1% to 3% error rate typically cited as an industry baseline.

Independent claims analysis across a large multi-employer dataset found error detection rates of 5% to 15%, with average recoverable findings between $500 and $1,200 per covered employee per year. For a plan with 1,000 covered employees, that range alone represents $500,000 to $1.2 million in annual exposure.

The consequences are not only financial. In September 2025, Aetna and Optum reached an $8.4 million settlement tied to fabricated billing codes that concealed administrative fees inside medical charges for nearly a decade before litigation forced disclosure. Transparency did not surface that pattern. Litigation did.

What's Actually Happening Behind the Scenes

Benefit Determination Errors

The most common category of claims error involves how a plan's own provisions get applied: deductibles, coinsurance, copays and plan-specific exclusions. These errors are rarely intentional. They happen because claims processing blends automated adjudication with manual review, and manual steps introduce inconsistency.

Dependent Eligibility Drift

Dependents who age out, divorce out or otherwise lose eligibility often stay on a plan for months or years because no one is cross-checking enrollment against life events. Dependent eligibility audits are frequently the fastest-paying workstream in a claims review because the savings start the moment ineligible members are removed.

Duplicate and Miscoded Claims

Duplicate payments, upcoding and unbundling do not show up in a pricing dashboard. They show up when someone compares the billed procedure codes against the medical record or the plan's coding logic, a step that transparency tools are not built to perform.

Why Current Approaches Aren't Enough

Most plan sponsors rely on the transparency and reporting the TPA already provides. That approach leaves the same party that processed the claim responsible for verifying it, which is a conflict most plans would not accept in any other financial function.

Dimension	Status Quo (Transparency Only)	Recommended Approach (Active Oversight)
Data Source	TPA self-reported dashboards and files	Independent claims audit with ongoing monitoring
Claims Reviewed	Small annual sample (roughly 300 to 350 claims)	Continuous review across the full claims feed
Error Detection	Limited to what the TPA discloses	Independent reviews typically identify 5% to 15% error rates
Fiduciary Documentation	Minimal and reactive	Documented audit trail supporting the ERISA Section 404 prudent process
Financial Recovery	Rare and dependent on TPA cooperation	Structured recovery process built into the independent audit

How to Fix It

Commission an Independent Claims Audit

Engage an audit firm with healthcare claims and coding expertise that has no ownership, referral or financial relationship with your TPA or insurance carrier. Independent reviews provide an objective assessment of claims accuracy.

Strengthen Your Audit Rights

Negotiate audit provisions into every ASO agreement that allow the plan to review any claim, at any time, without restrictive sampling requirements, extrapolation limits or barriers to independent audits.

Separate Eligibility Audits

Make dependent eligibility verification a recurring workstream rather than combining it with medical claims auditing. Separate reviews often identify ineligible dependents quickly and generate meaningful savings.

Implement Continuous Claims Monitoring

Replace infrequent annual audits with quarterly or monthly monitoring of claims activity. Continuous oversight identifies payment leakage earlier, reducing financial losses before they accumulate.

Document Every Oversight Activity

Retain board minutes, committee charters, audit reports and follow-up actions. Documenting the review process is just as important as documenting the audit findings for demonstrating prudent fiduciary oversight under ERISA Section 404.

Use Independent Performance Metrics

Tie TPA performance guarantees to independently verified claims accuracy rather than relying solely on the TPA's own reporting. Independent validation ensures performance commitments can be objectively measured.

Moving from periodic audits to continuous, independent oversight strengthens claims accuracy, improves financial accountability and creates the documented fiduciary process needed to meet ERISA obligations while reducing long-term claims leakage.

Red Flags That Signal the Problem Applies to Your Plan

Your last independent claims audit was conducted more than two years ago, or your plan has never completed one.

Your TPA reports 99% or higher claims accuracy, but you have never reviewed the underlying sample size, methodology or validation process.

Claims spending continues to increase even though employee enrollment and healthcare utilization remain relatively stable.

Your ASO agreement limits how many claims can be audited or restricts which independent firms are permitted to perform the review.

No one on your benefits committee can identify the most recent claims error the plan discovered and corrected.

Specialty pharmacy spending has increased faster than every other plan cost category without a dedicated pricing or payment accuracy review.

If three or more of these statements apply to your plan, your current oversight process may be leaving payment errors, financial leakage and fiduciary risks undetected. Regular independent audits and continuous claims monitoring can help identify issues before they become significant financial or compliance problems.

The ROI of Doing It Right

Independent claims audits routinely recover a meaningful share of the errors they identify, and the ongoing savings from corrected TPA behavior often exceed the one-time recovery. [internal link: claims audit ROI calculator] Dependent eligibility reviews in particular tend to pay for themselves within months, since removing an ineligible dependent stops future claims immediately rather than only recovering past ones.

Beyond dollars, a documented audit and monitoring process is the clearest evidence a plan sponsor has that it met the prudent expert standard under ERISA Section 404. That documentation matters most in the moment a plan can least afford to be without it: a DOL inquiry or a participant lawsuit. EBSA alone recovered $1.4 billion for plans, participants and beneficiaries in fiscal year 2025, a reminder that enforcement activity in this space is active and ongoing, not theoretical.

Frequently Asked Questions

Is claims data transparency required by law?

Yes. The Transparency in Coverage rule and the Consolidated Appropriations Act, 2021 require pricing disclosures, but neither requires payment accuracy verification.

Does transparency alone satisfy ERISA fiduciary duty?

No. ERISA Section 404 requires a prudent process for monitoring plan expenses, which access to data does not fulfill by itself.

How often should a self-funded plan audit its claims?

Most fiduciary advisors recommend an independent audit at least annually, supplemented by ongoing quarterly or monthly monitoring.

What percentage of claims typically contain errors?

Independent audits commonly find error rates between 3% and 10%, above the 1% to 3% often cited as an industry baseline.

Who is legally responsible for claims accuracy, the plan sponsor or the TPA?

The plan sponsor. ERISA places fiduciary responsibility on the plan sponsor even though the TPA processes the claims.

Can a plan sponsor audit claims without the TPA's permission?

Audit rights depend on the ASO agreement. Sponsors should negotiate unrestricted audit access before signing or renewing a contract.

What is the difference between a claims audit and ongoing monitoring?

An audit reviews a sample retrospectively. Ongoing monitoring reviews claims continuously, closer to the time they are paid.

Are machine-readable pricing files useful for claims oversight?

They provide pricing context but are not designed to verify individual claim accuracy, and many are difficult to process without specialized tools.

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Why Claims Data Transparency Alone Isn't Enough