If you are enrolled in the Qualified Medicare Beneficiary program, known as QMB, there is a federal rule about your medical bills that many people are never told: providers are not allowed to bill you for Medicare-covered care. Not for deductibles, not for coinsurance, not for copayments. In Medicare's own words, "it's against the law for Medicare providers to bill you for items and services Medicare covers." More than 8 million people were in the QMB program in 2023, more than 1 in 8 people on Medicare, and the government's own reports say many of them pay bills they never owed. This article explains exactly what the protection covers, the two small exceptions, and the three steps that stop a wrongful bill. (Full disclosure: Slothwise, the company behind this site, makes a health app listed in the Medicare App Library on Medicare.gov. More on that near the end.)

What QMB is, in one paragraph

QMB is the largest of the Medicare Savings Programs, the state-run programs that help people with limited income pay Medicare's costs. QMB pays your Part A premium if you have one, your Part B premium, and your Medicare deductibles, coinsurance, and copayments. In 2026 the federal income limit is $1,350 a month for an individual and $1,824 for a couple, with limits slightly higher in Alaska and Hawaii and more generous in some states. If you have both Medicare and Medicaid, or think you might qualify, our plain-English guide to having both programs covers all four programs and how to apply.

What the law actually says

The protection is written into the Social Security Act, and Medicare's guidance to providers is blunt. The rule, assembled from the government's own words:

• No Medicare provider may bill you for Medicare-covered cost sharing. "Medicare providers and suppliers, including pharmacies, must not bill Medicare patients in the Qualified Medicare Beneficiary (QMB) group for Medicare Part A or Medicare Part B cost sharing."

• You have no legal obligation to pay any Part A or Part B deductible, coinsurance, or copayment for covered care. None.

• It binds every Medicare provider, not just ones that take Medicaid. "Federal law prohibits all Original Medicare and MA providers and suppliers (not only those that accept Medicaid) from billing QMBs." That includes Medicare Advantage providers and pharmacies.

• It applies even when Medicaid pays the provider nothing. States are allowed to limit what they pay providers toward your cost sharing, sometimes to zero. Providers understandably dislike this, and it is why some offices get the rule wrong. But the law says Medicare's payment plus whatever the state pays counts as payment in full. The shortfall is never yours.

• It follows you across state lines, even if your QMB benefit comes from a different state than where you get care.

• You cannot waive it. Providers "may not elect" to charge you, and you may not volunteer to pay these amounts, even to keep the peace.

• If you were billed anyway, you are owed a refund. Providers are instructed to "recall any bills for QMB Medicare cost sharing or bills you turned over to collections" and to "refund any collected QMB cost-sharing money."

A provider who bills you anyway is violating their Medicare provider agreement and can face federal sanctions. This is not a gray area.

The two charges that are normal

Two kinds of small charges are not violations, and knowing them keeps you from fighting the wrong battles:

1. A small Medicaid copayment, if your state charges one. This comes from Medicaid's rules, not Medicare's.

2. Your prescription copays at the pharmacy. The QMB protection covers Part A and Part B. Part D prescriptions run under Extra Help instead, which caps your copays at a few dollars, no more than $12.65 per covered drug in 2026, and no more than $4.90 if you have full Medicaid alongside QMB. A pharmacy collecting those amounts is following the rules.

Everything else for Medicare-covered care, the deductibles, the 20 percent coinsurance, the hospital copays, is off limits.

Why wrongful bills still happen

Medicare admits it plainly: "Despite the law, some providers and suppliers, including pharmacies, continue to improperly bill QMBs for Medicare cost sharing. Many QMBs don't know the billing restrictions... and sometimes pay the cost-sharing amounts." A federal study found people in QMB being wrongly billed, and consumer complaints describe these bills reaching debt collectors and even credit reports. The billing office usually is not malicious; it often does not realize you are in QMB, or does not know the lesser-of payment rules. Which is why the fix starts with information, not confrontation.

The three steps that fix it

1. Tell them you are in the QMB program. Show both your Medicare card and your Medicaid or QMB card every time you get care. If you have Original Medicare, your Medicare Summary Notice has stated your QMB status and shown your liability as zero since 2018; a copy of it is written proof.

2. If bills keep coming, call 1-800-MEDICARE (1-800-633-4227, TTY 1-877-486-2048). Medicare will confirm you are in QMB, ask the provider to stop billing you, and ask them to refund what you already paid.

3. If a debt collector is involved, bring in the Consumer Financial Protection Bureau. File a complaint at consumerfinance.gov/complaint or call 1-855-411-2372 (TTY 1-855-729-2372). They forward the complaint to the collector and work to get you a response.

Keep it calm and procedural. You are not asking for a favor; you are pointing at a federal rule with an enforcement path behind it.

Common questions

I already paid a bill I should not have. Is that money gone? No. You have the right to a refund, and providers are instructed to return collected QMB cost sharing. Start with the billing office; if that stalls, 1-800-MEDICARE can request the refund.

The office says they don't take Medicaid, so their Medicaid rules don't apply to me. True? No. This is the most common misunderstanding. The rule binds every provider that takes Medicare, including those that do not take Medicaid, and it applies even when Medicaid pays them nothing.

Does this work with a Medicare Advantage plan? Yes. The prohibition covers Medicare Advantage providers and their plan copays for Part A and Part B services.

I spend winters in another state. Am I protected there? Yes. The protection applies even when your QMB benefit is from a different state than the one where you get care.

I have SLMB or QI, not QMB. Does this apply to me? No, and this matters. SLMB and QI pay your Part B premium only, so regular deductibles and copays still apply to you. The never-bill rule is specific to QMB. If your income is near the QMB limit, it is worth asking your state whether you qualify.

A bill went to collections and I am worried about my credit. What now? Ask the provider to recall it, which the rules require, and file the CFPB complaint above. Consumer complaints about exactly this situation are why the CFPB publishes guidance on it.

How can Slothwise help?

Slothwise brings your Medicare claims, records, and bills together in one place and points out anything that looks wrong, in plain English, which is exactly how a charge that was never allowed gets caught instead of quietly paid. If a bill confuses you, or you help a parent in the QMB program, you can simply ask it. You can use it in the app or right from your text messages, and it is free to start, with no credit card. Our guide to catching medical bill errors covers the same checks by hand.

Slothwise is one option, not the only one. The steps above need no app at all, and for one-on-one help, your State Health Insurance Assistance Program (SHIP) at 877-839-2675 and 1-800-MEDICARE are free.

The short version

• In QMB, it is against federal law for any Medicare provider to bill you for Medicare-covered deductibles, coinsurance, or copays. You have no legal obligation to pay them, and you cannot even volunteer to.

• The rule covers every Medicare provider, including Medicare Advantage and providers that do not take Medicaid, in every state, even when Medicaid pays them nothing.

• Normal exceptions: a small state Medicaid copay, and your few-dollar prescription copays at the pharmacy.

• When a bill arrives: show your cards and your Medicare Summary Notice, then 1-800-MEDICARE, then the CFPB if a collector is involved. Money already paid must be refunded.

Slothwise is not affiliated with or endorsed by Medicare, the Centers for Medicare & Medicaid Services, or any government agency, and does not sell, endorse, or recommend any Medicare plan. This article is general information, not legal, financial, or medical advice. For questions about your specific coverage, contact 1-800-MEDICARE, your State Health Insurance Assistance Program (SHIP), or a qualified professional. Last updated: July 2026.