- Underpayments don’t look like problems. The payment clears, so the lower amount quietly becomes the new normal.
- Audits comparing EOBs against contracted fee schedules routinely find $5-$30 in discrepancy per claim.
- That adds up to $15,000-$90,000 a year for a five-physician group.
- Total leakage can pass 10% of net revenue in poorly managed cycles, which means up to $600,000 a year for a $6M practice.
- A single base unit error across 200 monthly cases can cost thousands every month, so check payments against contracts at least quarterly.
Underpayments don’t get caught by accident. They get caught by someone who decided to look.
Here’s how contract-to-payment gaps go unnoticed, and how to start catching them.
An underpayment doesn’t ask for permission. The insurer sends less than the contract specifies, the payment clears without incident, and unless someone is specifically checking line by line, it simply becomes the new normal — the baseline everyone unconsciously accepts. Forensic audits comparing EOBs against contracted fee schedules routinely find $5–$30 in discrepancy per claim, spread quietly across hundreds of cases.
Across a year, that’s $15,000–$90,000 for a five-physician group — and HFMA’s benchmark shows total leakage climbing past 10% of net revenue in poorly managed cycles, which for a $6 million practice means up to $600,000 disappearing annually without a single denial ever being logged anywhere. A single base unit billing error repeated across 200 monthly cases can quietly cost thousands every single month, compounding for years if nobody catches it.
What’s striking is how invisible this is by design: an underpayment isn’t a mistake anyone made in the moment. It’s a gap between contract and reality that only reveals itself under deliberate scrutiny, months or years after the fact.
Final takeaway
So here’s the question every anesthesia group should be asking at least once a quarter: when was the last time we actually checked what we were paid against what we were contractually owed — line by line, claim by claim, not just in aggregate? Because underpayments don’t get caught by accident. They get caught by someone who decided, deliberately, to look.
Sources
- LinkedIn. The forensic RCM audit: identifying the 5% revenue leakage your software misses.
- Medical Billers and Coders. Net Collection Ratio Benchmarks for Multi-Specialty Groups.
- Phimed. RCM Net Collection Rate.
- MedCloudMD. Top 7 Hidden Revenue Leaks in Anesthesia Billing.
- MBMPS. Benchmarking Anesthesia Revenue Cycle KPIs: Metrics That Matter.
- AMS Solutions. 2026 Medical Billing Benchmark Report.
Frequently asked questions
What counts as an underpayment in anesthesia billing?
An underpayment occurs when a payer pays less than the contracted or expected rate on a claim, even though the claim itself was accepted. Because the claim shows as paid, the shortfall rarely triggers a review.
Why do anesthesia underpayments often go unnoticed by practices?
Underpayments get posted as a routine part of the payment cycle. Unless a practice compares what it was paid against what the contract or fee schedule calls for, the discrepancy stays invisible.
What typically causes payers to underpay anesthesia claims?
Common causes include outdated conversion factors, misapplied fee schedules, incorrect time-unit or modifier processing, and improper bundling of services. Each can quietly reduce payment without ever generating a denial or explanation.
How do underpayments differ from denials in their impact?
A denial stops a claim and forces a decision, while an underpayment lets a claim close as if it were resolved correctly. That makes underpayments easier to miss and, over time, often more costly in aggregate.
How can anesthesia groups recover revenue lost to underpayments?
Recovering underpaid revenue means routinely reconciling payments against contracted rates, not just confirming a claim was paid. Practices that build this check into payment posting catch discrepancies early enough to dispute them before deadlines expire.