One ESRD patient billed at commercial rates can approach your specific stop-loss deductible on their own, $400,000 to $600,000 a year for a single dialysis patient. Dialysis is one of the most predictable large claims in self-funding. Most plans overpay for it badly.
Key takeaways
One ESRD patient billed at commercial rates can run $400,000 to $600,000 a year. That's enough to breach a specific stop-loss deductible alone.
Freestanding dialysis facilities run about break-even on Medicare. Their profit comes from commercial payers. The all-payer margin was 15% in 2023.
The HHS Office of Inspector General found documentation non-compliance in 70 of 100 sampled claims at one large dialysis provider.
Reference-based pricing for dialysis at 150% to 200% of Medicare is defensible, because facilities roughly cover costs at Medicare rates.
Audit your dialysis billing. Right-size your specific stop-loss for ESRD, not just for oncology.
Why is one dialysis patient enough to blow up your plan?
Because dialysis never stops. End-stage renal disease requires treatment three times a week, every week, for life. That's 150 or more sessions a year, stacked month after month.
At commercial rates, a single patient can run $400,000 to $600,000 annually. That's not a projection. That's the bill landing in your claims data right now.
One member. One diagnosis. A recurring claim stream that shows up every renewal until it doesn't.
Why are commercial dialysis rates indefensible?
Because dialysis providers don't need commercial rates to stay in business. Freestanding facilities run roughly break-even on Medicare. Their profit comes almost entirely from commercial payers.
MedPAC's March 2025 report put the freestanding fee-for-service Medicare margin at -0.2% in 2023, with a near-zero margin projected for 2025. The all-payer margin was 15% that same year. The gap is your money.
The CMS base rate for 2026 is $281.71 per treatment. A UCLA study found commercial insurers paid about $1,041 per session, roughly four times what government payers paid.
The same chair. The same technician. The same four-hour session.
What billing problems hide in dialysis claims?
Overpayment is problem one. The documentation behind the bill is problem two.
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The HHS Office of Inspector General audited 112,192 Medicare dialysis claims worth over $276 million for Dialysis Clinic, Inc. in 2018. It found the provider did not comply with Medicare requirements in 70 of 100 sampled claims. Most failures involved missing or incomplete comprehensive assessments.
That audit only covered Medicare. No federal watchdog reviews the same billing on your commercial claims. Your TPA processes the bill, it gets paid, nobody flags it.
The DOL's report to Congress on self-insured plans leans on Form 5500 data that runs two to three years behind. By the time anyone in Washington sees a pattern, that patient has dialyzed on your plan for years.
How does dialysis wreck your stop-loss math?
Specific (individual) stop-loss deductibles commonly land between $200,000 and $500,000 per member. One ESRD patient at commercial rates can approach or breach that on their own.
Before your other high-cost claimants. Before your specialty drug spend.
If your specific deductible sits at $200,000 or $250,000, you eat the first chunk of that dialysis claim before reinsurance applies. The number you pick matters. Learn how to right-size your stop-loss attachment point against real claim exposure, not a guess.
What can you actually do about it?
Reference-based pricing for dialysis is gaining traction, and it holds up. Pricing claims at 150% to 200% of Medicare is defensible when MedPAC shows facilities roughly cover their costs at Medicare rates. The math supports it.
Beyond RBP, here's what your plan should have in place:
A carve-out or direct contract for dialysis, especially in a market dominated by DaVita or Fresenius.
Specific stop-loss that's right-sized for ESRD exposure, not just for oncology.
Claims audit rights in your TPA contract, so someone actually reviews dialysis billing documentation.
Predictive flags on the claim codes tied to outpatient dialysis, so you see the patient before month twelve.
An annual benchmark of your dialysis unit cost against the Medicare rate.
None of this requires switching carriers. It requires looking at data you already have. Pull your claims data before renewal and ask harder questions about one of the most predictable cost drivers you own.
Frequently asked questions
How much does one dialysis patient cost a self-funded plan?
At commercial rates, a single ESRD patient commonly runs $400,000 to $600,000 a year. The driver is frequency, not a one-time event. Dialysis happens about three times a week, so the claims stack across 150-plus sessions annually.
Can I use reference-based pricing just for dialysis?
Yes. Many plans apply RBP to dialysis specifically, pricing it at 150% to 200% of Medicare. That's defensible because freestanding facilities roughly break even on Medicare and earn their margin from commercial payers.
Does Medicare Secondary Payer apply to ESRD patients?
Yes, but not right away. For members who qualify for Medicare based on ESRD, your group health plan pays primary for a 30-month coordination period. After that Medicare becomes primary, which can sharply cut your exposure.
What should I pull from my claims data first?
Start with any active outpatient dialysis claims and the unit cost per session. Compare that figure to the Medicare rate to see your multiple. If you can't get that detail, that's its own problem, because your plan is entitled to its claims data.
