42 CFR 447.15: QMB Billing Protection in Maryland

The Federal Rule That Protects QMB Patients

42 CFR § 447.15 is the Medicaid payment rule: it requires states to limit Medicaid participation to providers who accept the Medicaid agency's payment, plus any Medicaid deductible, coinsurance, or copayment required of the individual, as payment in full. The separate QMB billing prohibition is in Section 1902(n)(3)(B) of the Social Security Act (42 U.S.C. § 1396a(n)(3)(B)), which bars Medicare providers from collecting Part A or Part B cost-sharing from QMB beneficiaries for Medicare-covered services.

This protection applies to every Medicare provider and supplier, whether they participate in Medicaid or not. Medicare processes the covered claim; Maryland may pay some or none of the remaining cost-sharing under its payment rules. The provider still cannot collect that unpaid cost-sharing from the QMB patient.

In Maryland, only about 1.6% of physicians have opted out of Medicare entirely. For the vast majority of providers your parent sees, the billing protection applies without exception.

Why QMB Patients Still Get Billed

The regulation is clear. The billing happens anyway.

Most medical billing departments run automated systems that flag any patient balance after Medicare pays its share. The system doesn't check whether the patient has QMB status — it just generates a statement for the remaining amount. That statement is technically illegal, but it looks identical to a legitimate bill.

Common scenarios in Maryland:

• A hospital sends a bill for the Part A deductible ($1,676 per benefit period) after an inpatient stay
• A specialist's office bills the 20% Part B coinsurance after a procedure
• A lab sends a balance for the portion Medicare didn't cover
• A new provider's system doesn't have the QMB flag because the patient recently enrolled and the Medicaid crossover file hasn't updated

The QMB cost-sharing is not your parent's responsibility. But ignoring a bill can lead to collection agency involvement, which creates stress and potential credit issues even when the underlying debt is invalid.

What to Do When a Provider Bills a QMB Patient

Step 1: Verify QMB status is current. Check the approval notice from Maryland DHS or log into myMDTHINK to confirm active enrollment.

Step 2: Contact the billing department. Call the number on the statement and tell them the patient is a Qualified Medicare Beneficiary. Ask them to check the Medicare Beneficiary Database or the state Medicaid eligibility verification system. Many billing offices resolve it at this stage once they confirm QMB status.

Step 3: Send a written dispute. If the phone call doesn't resolve it, send a formal letter citing 42 U.S.C. § 1396a(n)(3)(B) and 42 CFR § 447.15. The letter should include:

• The patient's Medicare number and QMB effective date
• The specific bill or account number being disputed
• A statement that federal law prohibits billing QMB beneficiaries for Medicare cost-sharing
• A request to remove the balance and cease collection activity

Step 4: Escalate if needed. File a complaint with 1-800-MEDICARE (the CMS contractor) or with the Maryland Department of Health. CMS can contact the provider directly to enforce compliance.

The Provider's Obligation

Medicare providers do not have to accept assignment on every claim. But they cannot bill a QMB beneficiary for Medicare cost-sharing on Medicare-covered services. Any Medicaid payment follows Maryland's payment rules; even if Medicaid pays less than the cost-sharing amount or nothing, the provider cannot pass the unpaid balance to the patient.

This is not a Maryland-specific rule. It's federal, and it overrides any state billing practice or provider contract.

Protecting Your Parent Going Forward

After resolving a billing dispute, ask the provider to flag the patient's account as QMB-enrolled so future claims process correctly. New providers should be told about QMB status at the first appointment, before services are rendered.

The Maryland Medicare Savings Programs, Extra Help & SPDAP Guide includes a ready-to-use billing dispute letter template and a provider communication script for handling these situations.

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