Advantage Plans Can Cap Your In-Network Bills at $9,250. A PPO’s Combined Cap Can Reach $13,900, and Covered Out-of-Network Care Counts Toward the Bigger One
She chose her Medicare Advantage PPO because it promised a clear out-of-pocket ceiling, and she planned her knee surgery around that number. What she did not know was that one out-of-network provider on her surgical team would activate an entirely…
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Picture a 68-year-old on a Medicare Advantage PPO. She picked it last October because the HMO across town wouldn’t let her keep the orthopedist she liked, and the plan’s brochure promised an out-of-pocket maximum of $9,250. She read that amount as a ceiling.
In July she scheduled a knee replacement with that orthopedist, knowing the plan classifies him as out-of-network and choosing him anyway. The out-of-pocket cap she thought she bought isn’t the one that governs the bill. The one that does is $13,900. Almost every Advantage explainer stops at the first number. The second one matters too.
Two Caps Hiding in Every PPO
Every Medicare Advantage plan carries a federal in-network out-of-pocket maximum, and for 2026 the statutory ceiling is $9,250. Traditional HMOs generally don’t cover routine out-of-network care, so most HMO enrollees deal only with that figure. The exceptions matter: HMO point-of-service plans cover specified out-of-network services, and emergency and urgently needed care are treated differently in any plan type.
PPOs carry two caps: an in-network cap set at or below $9,250, and a combined cap adding in-network and out-of-network cost sharing together. The 2026 statutory ceiling for the combined number is $13,900. Actual plans mostly sit below the ceilings. Among individual plans analyzed by KFF, the average in-network limit is $5,421 across all enrollees, $4,636 for HMOs and $6,592 for PPOs, with a $9,825 average combined limit. Those averages exclude special needs plans, employer plans, PACE and cost plans.
What Actually Counts Toward It
Here’s the part the brochure won’t explain. Going out-of-network doesn’t automatically generate a $13,900 bill. It changes which cap applies.
Only your plan-approved cost sharing for covered Part A and Part B services accrues toward that combined cap. Premiums don’t count. Part D drug spending doesn’t count, and it has its own separate $2,100 limit in 2026. Services the plan doesn’t cover don’t count, and neither do amounts outside the plan’s allowed cost sharing. The cap is a ceiling on a specific category of spending, not on everything you pay in a year.
So the out-of-network surgeon doesn’t hand you the bigger number. He unlocks it. Compare two structures for a retiree facing one major surgery and rehab:
| Cost, annual, per person | PPO, all in-network | PPO, out-of-network surgeon | Original Medicare + Plan G |
|---|---|---|---|
| Part B premium | $2,434.80 | $2,434.80 | $2,434.80 |
| Plan premium | often $0 | often $0 | Plan G premium, varies |
| Covered Part A and B cost sharing | up to $9,250 | up to $13,900 | $283 Part B deductible |
In a healthy year the PPO wins on cash flow. In a year that crosses network lines, the PPO’s worst case runs to more than half a typical retired worker’s annual Social Security benefit, on top of premiums. The average retired-worker benefit was roughly $2,086 a month as of July.
Original Medicare with Medigap Plan G generally leaves the beneficiary the $283 Part B deductible on Medicare-covered Part A and Part B services, with any provider that accepts Medicare. It doesn’t cap spending on services Medicare doesn’t cover, on prescription drugs, or on care from providers who don’t participate. Part A’s $1,736 hospital deductible and the $217 daily skilled nursing coinsurance for days 21 through 100 are what Plan G buys down. Network exposure is one of several bills Medicare hands retirees quietly. We mapped the rest, including IRMAA surcharges and coverage gaps, in a free guide to Medicare’s hidden bills.
Even in-network, a PPO can require approval before it pays. KFF found 99% of enrollees in the individual plans it analyzed are in plans requiring prior authorization for some services. A denial doesn’t raise the cap. It means the spending doesn’t count toward the cap at all unless the appeal succeeds.
What to Do Before Open Enrollment Closes
The second cap isn’t hidden, exactly. It’s just one line lower than the amount that is easy to see. These three steps could help you avoid surprises:
- Find both numbers in your Summary of Benefits. The in-network maximum is usually on page one. The combined maximum sits a line below or on the next page. If they match, you’re on an HMO or a plan that voluntarily caps both at the lower figure.
- Get written network confirmation before any planned surgery. The surgeon, assistant surgeon, anesthesiologist, hospital and facility, all for the date of service. One out-of-network name moves which cap applies.
- If a $13,900 year would break the budget, use this window. An HMO with a tighter network and a single cap is one option. Original Medicare with a supplement is the other, though Medigap requires medical underwriting outside your one-time window in most states.
The plan reveals both maximums. The sooner you know which one applies, the better off you will be.
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Gerelyn Terzo is the author of dividend investing handbook "Dividend Investing Strategies: How to Have Your Cake & Eat It Too." A veteran financial journalist, she covers agri-finance for outlets like Global AgInvesting and the broader stock market and personal finance for 24/7 Wall Street. She began at CNBC and later helped launch Fox Business in New York. Gerelyn currently resides in Woodland Park, Colorado and dabbles in nature photography as a hobby.
