Written & Reviewed by
Medicare cost-sharing protection
Last updated: 21 September 2026
If you are in the Qualified Medicare Beneficiary (QMB) program, federal law protects you from most Medicare Part A and Part B cost-sharing bills for Medicare-covered care. That includes deductibles, coinsurance, and copayments. A provider cannot make you pay those protected charges just because Medicaid pays little or nothing.
Bottom Line
Do not assume a QMB bill is valid. Check the date of service, make sure QMB was active that day, and confirm the charge is Medicare Part A or Part B cost-sharing for a covered item or service. If it is, ask the provider to stop billing, recall any collection account, and refund protected money you already paid. Medicare can help if the provider will not correct it.
Start Here
- Check the service date. QMB protections apply to dates when your QMB coverage was active.
- Check the charge. Look for a Medicare deductible, coinsurance, or copayment on covered Part A or Part B care.
- Call billing first. Ask the provider to place the account on hold while it verifies your QMB status.
If you are not sure whether you have QMB, start with our Medicare Savings Programs guide. You can also use the official Medicare QMB page to review the 2026 rules.
Quick Reference: Is This Bill Protected?
| Charge | QMB protection | First step |
|---|---|---|
| Part B coinsurance after a Medicare-covered doctor visit, test, ambulance trip, or equipment claim | Usually protected | Call provider billing |
| Part A deductible or coinsurance for a Medicare-covered hospital stay | Usually protected | Call hospital billing |
| Medicare Advantage copay for a covered Part A or Part B service | Usually protected | Call plan member services |
| Part D prescription copay | Different rules | Call the drug plan |
| Care Medicare does not cover | Not automatically protected | Check Medicare and Medicaid decisions |
| Small Medicaid copayment allowed by your state | May be allowed | Ask state Medicaid |
QMB protects Medicare Part A and Part B cost-sharing. It does not make every health service free.
What Has Changed
The September 2026 review found no change to the core federal QMB no-billing rule. The 2026 federal QMB limits also remain the same values published by Medicare: $1,350 monthly income for one person and $1,824 for a married couple, with resource limits of $9,950 and $14,910. Since the prior May review, CMS updated its ABN information in July 2026 and added a practical Medicare billing action plan. This article also corrects the provider-refusal explanation and adds clearer guidance on noncovered care, collections, refunds, and out-of-state QMB protection.
What QMB Protects
QMB stands for Qualified Medicare Beneficiary. It is one of the Medicare Savings Programs and is administered through state Medicaid. In 2026, the federal QMB monthly income limit shown by Medicare is $1,350 for one person and $1,824 for a married couple. The federal resource limit is $9,950 for one person and $14,910 for a couple. Alaska and Hawaii have higher income limits, and some states use higher limits or count income and resources more generously.
QMB may pay the Medicare Part A premium if you owe one, the Part B premium, and Medicare Part A and Part B deductibles, coinsurance, and copayments. The key billing protection is stronger than ordinary financial help. The CMS QMB program page says QMB members have no legal duty to pay Part A or Part B cost-sharing for Medicare-covered items and services.
The current CMS QMB fact sheet also makes three points that often solve disputes. The rule applies even when the provider does not accept Medicaid. It still applies if Medicaid pays nothing. It also applies when your QMB coverage is from a different state than the state where you receive care.
You cannot waive this protection. CMS says a QMB member may not elect to pay Medicare deductibles, coinsurance, or copayments that federal law bars the provider from collecting. A billing office should not ask you to sign away protected Medicare cost-sharing.
QMB can be “QMB-only” or can come with full Medicaid. Our dual eligible guide explains the difference. Full Medicaid may cover services beyond Medicare, but those extra benefits and cost rules vary by state.
Check the Bill Before Paying
Start with the date of service, not the due date. QMB protection follows the date you received care. If you were not yet enrolled in QMB on that date, the no-billing rule may not protect that older charge.
Next, identify what the bill calls “patient responsibility.” Compare it with your Medicare Summary Notice (MSN), Medicare Advantage Explanation of Benefits (EOB), or online claim. Our Medicare Summary Notice guide can help with Original Medicare. The official Medicare MSN page explains that an MSN is a claims statement, not a bill.
If the provider bill is asking for the same Part A or Part B deductible, coinsurance, or copayment shown on a Medicare-covered claim, QMB should usually block the provider from collecting it. If the service was denied, do not jump straight to paying. First find out why it was denied and whether the denial makes the service truly noncovered.
Ask for the claim reason. A wrong code, missing authorization, stale QMB status, failed Medicare-to-Medicaid crossover, or plan data problem can make a lawful covered service look like a patient bill.
QMB Is Different From Other Medicare Help
Do not assume every Medicare Savings Program gives the same billing protection. QMB is the program with the federal no-billing rule for covered Part A and Part B cost-sharing.
| Program | Main help | Part A/B cost-sharing |
|---|---|---|
| QMB | Part A/Part B premiums and cost-sharing | Provider generally cannot bill you |
| SLMB | Part B premium | Normal Medicare cost-sharing may still apply |
| QI | Part B premium | Normal Medicare cost-sharing may still apply |
| Extra Help | Part D drug costs | Does not replace QMB protection |
| Full Medicaid | State Medicaid benefits | QMB rule applies when QMB is active |
People who qualify for QMB also receive Extra Help with Medicare prescription drug costs. Part D has separate cost-sharing rules, so a pharmacy copay for a Part D prescription is not automatically an illegal QMB bill. See our Extra Help guide for prescription drug costs.
Original Medicare and Medicare Advantage
The same QMB no-billing protection can apply in Original Medicare and Medicare Advantage, but the first call is different.
Original Medicare
Compare the provider bill with your MSN. If QMB was active and the charge is protected Medicare Part A or Part B cost-sharing, call the provider’s billing office. If the office does not correct the bill, call 1-800-MEDICARE at 1-800-633-4227. TTY users can call 1-877-486-2048. Medicare’s QMB tips sheet says Medicare can confirm QMB status, ask the provider to stop billing, and help with refunds.
Medicare Advantage
Call the member services number on your plan card. Ask the plan to verify QMB for the service date, contact the provider, correct any QMB status problem, and give you a case number. CMS’s QMB plan memo reminds Medicare Advantage plans that providers cannot collect protected Part A and Part B cost-sharing from QMB members.
Provider-refusal rule is different. QMB billing protection does not guarantee that every Original Medicare provider must accept you as a new patient. For Medicare Advantage network providers, CMS tells plans to address QMB-based refusal because network providers must not discriminate against QMB members simply because they are protected from cost-sharing. If a Medicare Advantage network provider refuses you for that reason, report it to the plan.
If the plan also denied the service, you may have both a billing problem and an appeal problem. Our Medicare Advantage appeals guide explains the appeal path.
ABNs and Care Medicare Does Not Cover
QMB does not erase every charge. A provider may sometimes bill for care that Medicare does not cover, but the notice and liability rules matter.
For Original Medicare, an Advance Beneficiary Notice of Noncoverage (ABN) may be used when a provider expects Medicare to deny an item or service in a situation where an ABN is required. CMS updated its ABN information page in July 2026, and the current ABN tutorial reflects the revised form. Our Medicare ABN guide explains what to check before signing.
The important QMB detail is this: an ABN does not make protected Medicare cost-sharing collectible. But if Medicare denies the service and Medicaid also does not cover it, a properly used ABN can sometimes shift liability for the noncovered service to a QMB beneficiary. CMS’s financial liability manual explains that QMB-only beneficiaries can become liable in some ABN situations after both Medicare and Medicaid adjudicate the claim. People with full Medicaid may have additional state protections.
Do not treat an ABN as proof you owe. Ask what Medicare decided, what Medicaid decided, and whether the bill is for a noncovered service or for protected Medicare cost-sharing.
How to Fix a Wrong QMB Bill
- Call the billing department. Ask for patient accounts or a billing supervisor, not only the front desk.
- Give the service date. Ask the office to verify QMB status for that exact date.
- Show proof. Give the office your Medicare card, Medicaid or QMB card, approval notice, or MSN showing QMB status.
- Ask for an account hold. Tell the office not to send the bill to collections while QMB is being reviewed.
- Ask for correction. Request removal of protected cost-sharing and a corrected zero-balance statement.
- Escalate if needed. Call Medicare for Original Medicare, or the plan for Medicare Advantage.
Provider billing script
“I am enrolled in the Qualified Medicare Beneficiary program. This bill appears to be Medicare Part A or Part B cost-sharing. Please place the account on hold, verify my QMB status for the service date, remove any protected patient balance, and send me a corrected statement.”
Medicare Advantage script
“I have QMB, and a network provider is billing me for Medicare Part A or Part B cost-sharing. Please open a case, confirm my QMB status for the service date, contact the provider, stop the billing, and give me a case number.”
If you need a counselor to review the bill and notices with you, our SHIP and SMP guide explains free Medicare counseling and fraud-help routes. You can also use the national SHIP locator.
Collections and Refunds
If a protected QMB bill went to collections, do not ignore it. CMS tells providers and suppliers to recall improper QMB bills from collections and refund protected cost-sharing that they collected. A joint CMS-CFPB QMB statement also warns providers, Medicare Advantage plans, and debt collectors about improper QMB billing and collection.
If you receive a debt collector’s validation notice, read the dispute deadline. Under current CFPB rules, a written dispute sent during the 30-day validation period generally requires the debt collector to stop collection of the disputed amount until it sends verification. The CFPB dispute guide explains this rule.
Debt collector script
“I dispute this debt. I was enrolled in QMB on the service date, and this appears to be protected Medicare cost-sharing. Please send the validation information, claim details, original creditor, service date, and proof that this amount is legally collectible from me.”
Refund script
“QMB was active on the service date, and I paid Medicare cost-sharing that I should not have been billed. Please refund the protected amount, correct the account to zero, recall any collection referral, and send written confirmation.”
If a collector keeps pursuing an improper QMB debt, use the CFPB complaint system. The CFPB can forward the complaint to the company for a response.
Documents to Gather
- Medicare card
- Medicaid card, QMB card, or state approval notice
- QMB effective date
- Provider bill or collection notice
- Medicare Summary Notice or plan EOB
- Any ABN or other notice signed before care
- Proof of payment if you already paid
- Call notes with names, dates, and case numbers
- Copies of letters, portal messages, or faxes
If you cannot find proof of your QMB start date, contact your state through the official Medicaid help directory. Ask for written proof of the QMB effective date and whether any state Medicaid copayment applies.
Reality Checks
- Billing systems can be wrong. A provider may miss QMB status even when Medicare or Medicaid has it.
- “We do not take Medicaid” is not enough. A Medicare provider still cannot bill protected QMB cost-sharing simply because it is not a Medicaid provider.
- Medicaid may pay zero. The provider still cannot transfer protected Medicare cost-sharing to you.
- Out-of-state care is still protected. CMS says the rule follows the QMB member even when QMB is from another state.
- Noncovered care is different. QMB does not automatically erase charges for services Medicare does not cover.
- Refunds may take time. Ask for the amount, method, processing date, and written proof.
Common Mistakes to Avoid
- Paying at check-in because staff say everyone must pay a copay.
- Assuming a provider can bill you because it does not accept Medicaid.
- Forgetting to match the service date to the QMB effective date.
- Assuming an ABN automatically makes every charge valid.
- Throwing away the MSN, EOB, envelope, or collection notice.
- Calling once without getting a name, date, and case number.
- Missing the debt collector’s written dispute deadline.
- Thinking SLMB, QI, or Extra Help has the same no-billing rule.
Denied, Delayed, or Overwhelmed
If the provider will not correct the bill, call Medicare or your Medicare Advantage plan and ask for a case number. If the dispute involves whether the service itself should have been covered, ask whether you need a Medicare appeal rather than only a billing correction.
For Original Medicare complaints, use Medicare’s complaint guidance. If you still cannot resolve a Medicare rights problem, Medicare explains how to get rights and Ombudsman help. If court papers arrive about a medical debt, do not ignore them; contact legal aid or an attorney promptly.
Official Help and Who to Call
| Problem | Best contact | What to ask |
|---|---|---|
| Original Medicare provider keeps billing | 1-800-MEDICARE | Confirm QMB and stop protected billing |
| Medicare Advantage provider bills a copay | Plan member services | Open a QMB billing case |
| QMB start date is unclear | State Medicaid | Written effective-date proof |
| You need help reading notices | SHIP counselor | Review the bill, MSN, or EOB |
| Improper debt collection continues | CFPB | File a debt collection complaint |
For Medicare phone help, use the official Medicare contact page. The main number is 1-800-633-4227, and TTY is 1-877-486-2048.
Resumen en español
Si usted tiene QMB, por lo general no le pueden cobrar deducibles, coseguros ni copagos de Medicare Parte A o Parte B por servicios cubiertos por Medicare. La protección también puede aplicar si el proveedor no acepta Medicaid, si Medicaid no paga nada, o si recibe atención en otro estado.
Si recibe una factura, revise la fecha del servicio y confirme que QMB estaba activo ese día. Llame a facturación y pida que pongan la cuenta en espera, verifiquen QMB y eliminen el saldo protegido. Si ya pagó un costo compartido protegido, pida un reembolso.
Si tiene Medicare Advantage, llame al plan. Si tiene Medicare Original y el proveedor no corrige la factura, llame a Medicare al 1-800-633-4227. Si la cuenta está en cobranza, dispute la deuda por escrito lo antes posible y guarde copias.
Frequently Asked Questions
Does QMB make all care free?
No. QMB mainly blocks Medicare Part A and Part B deductibles, coinsurance, and copayments for Medicare-covered items and services. You may still owe for care Medicare does not cover, Part D drug costs under separate rules, or a small Medicaid copayment if your state allows one.
Can a provider bill me if it does not accept Medicaid?
Not for protected Medicare Part A or Part B cost-sharing while QMB is active. CMS says the rule applies even if the provider does not accept Medicaid or Medicaid pays nothing.
What if I already paid?
Ask for a refund if you paid protected Medicare cost-sharing while QMB was active. Ask the provider to correct the account, recall any collection referral, and send written proof of the refund and zero balance.
What if the bill is older than my QMB coverage?
The service date controls. If you were not in QMB on that date, the QMB no-billing rule may not protect that charge. Ask state Medicaid for the exact QMB effective date.
Can an ABN make me responsible?
Sometimes, but not for protected Medicare cost-sharing. If Medicare and Medicaid do not cover a service, a properly used ABN can sometimes shift liability for that noncovered service. Full Medicaid may add state protections.
Can an Original Medicare provider refuse me because I have QMB?
QMB billing rules do not force every Original Medicare provider to accept every new patient. Medicare Advantage network providers have stronger plan obligations against QMB-based refusal. If an MA network provider refuses you because QMB blocks cost-sharing, report it to the plan.
What if the bill went to collections?
Act quickly. Dispute the debt in writing, ask the provider to recall the account, and keep copies. A timely written dispute during the debt collector’s validation period generally pauses collection of the disputed amount until verification is sent.
About This Guide
Sources: This guide uses official federal, state, local, and other high-trust nonprofit and community sources linked in the article.
Editorial note
This guide is produced under the GFS Editorial Standards using official and other high-trust sources. GFS is not affiliated with a government agency and is not a substitute for official agency guidance. Individual eligibility outcomes cannot be guaranteed.
Corrections
Despite careful verification, errors may occur. Readers may email info@grantsforseniors.org with corrections.
Disclaimer
This article is for informational purposes only and is not legal, financial, medical, tax, disability-rights, immigration, or government-agency advice. Program rules, policies, funding, and availability can change. Readers should confirm current details directly with the responsible official program before acting.
Last updated: 21 September 2026 · Next review: 21 January 2027
About the Authors