Payer Contract Underpayments: How to Find Them

Payer contracts specify what each service is supposed to be paid. Payers do not always pay what the contract says. Independent physician-owned practices, without a systematic contract-to-payment comparison, almost never catch it. The revenue lost to underpayments is often the largest silent leak in the RCM stack.

How underpayments happen.

Fee schedule errors on the payer side. The contracted rate is what you negotiated. The rate loaded in the payer's system may not match. Every claim paid at the incorrect rate is an underpayment.

Downcoding. The payer processes the claim at a lower CPT code or level of service than what was billed. Sometimes with an explanation, sometimes not.

Bundling. Services that should be separately reimbursable get bundled by the payer under a global code. Sometimes correctly, sometimes not.

Modifier disallowance. Modifier 25, 59, and other unbundling modifiers get denied or ignored, resulting in reduced payment for services that were correctly coded.

Global period misapplication. Claims filed during a global surgical period get denied or downcoded even when they qualify for separate reimbursement.

Silent contract term changes. Payers occasionally update fee schedules without proactive notification. The practice bills at the previous rate, gets paid at a new lower rate, and never notices.

Why practices miss it.

Every one of these produces a payment that looks reasonable on the EOB. The claim was paid. Something arrived in the deposit. The practice moves on. Without a systematic comparison of paid amount against contracted rate for every claim, underpayments hide in plain sight.

Even practices that spot-check occasionally miss the pattern. Payers often underpay on high-volume, medium-dollar codes where the impact per claim is small but the cumulative impact is significant.

How to find yours.

A Payer Contract Review does three things:

1. Loads the contracted fee schedule for each major payer.
2. Compares actual paid amounts against the contracted rate on every claim over a defined lookback window.
3. Categorizes underpayments by payer, CPT code, and cause.

The output is a specific list of underpayments with dollar amounts, filed with the payer for correction. It also gives the practice the leverage to escalate systemic underpayments and, when contracts are up for renewal, to negotiate from a position of documented performance.

Typical recovery on a Payer Contract Review varies significantly by specialty and payer mix. Practices that have never done systematic underpayment review often recover 3% to 7% of the reviewed claim volume in identified underpayments.

When to run one.

• New payer contracts within the last 12 months.
• Existing contracts approaching renewal.
• Any payer whose payments feel lower than they used to.
• Any specialty where reimbursement complexity is high (surgery, ophthalmology, spine).

Schedule a Free Revenue Diagnostic Call to see what a Payer Contract Review would surface for your practice.

Related reading

• Coding Audits: What Physician-Owned Practices Miss Most Often
• Spine Surgery Billing: Pre-Authorization Hell and How to Survive It