Can Medicaid pay medical bills from before I applied?

How far back can Medicaid cover my bills?

Today, in many states, Medicaid can cover care you got in the months before the month you applied, as long as you would have qualified when you got the care. This is true even if the person who got the care has since died Source 11. The number of months it can reach back is 3 (42 CFR 435.915(a) (eCFR), published 2026).

This may not apply in every state. Your state's Medicaid office can tell you what applies to you.

This kind of coverage is called retroactive coverage. When you apply, say that you have unpaid medical bills from the months before, and list the dates of care and the providers.

Is that changing?

Yes. A recent federal law (Public Law 119-21) shortens the look-back for applications made on or after January 1, 2027 Source 22. CMS, the federal agency that oversees Medicaid, describes the change the same way in its guidance to states Source 33:

• Adults covered through the Medicaid expansion: the number of months becomes 1 (CMS, CMCS Informational Bulletin, Applications from January 1, 2027).
• Everyone else on Medicaid: the number of months becomes 2 (CMS, CMCS Informational Bulletin, Applications from January 1, 2027).
• Children's Health Insurance Program (CHIP) in states with a separate program: retroactive coverage stays a state choice, and the number of months can be at most 2 (CMS, CMCS Informational Bulletin, Applications from January 1, 2027).

This change has not started yet, and your state's Medicaid office has the details. If you have recent medical bills and may qualify, apply as soon as you can, before the shorter look-back applies to your application.

Does my state allow it?

Medicaid rules, including income limits and what is covered, differ by state Source 44. We don't have a verified list of which states cover the full look-back today, so we can't tell you what your state does.

To find out, ask your state Medicaid office, or a financial counselor at the hospital where you got care, how far back your state can cover you. Ask before you pay any bill from those months.

What is hospital presumptive eligibility?

It is a way to get Medicaid coverage quickly at the hospital. A hospital that takes part in Medicaid can choose to make these decisions: a qualified hospital can decide from basic information that you are presumptively eligible for Medicaid, and Medicaid then covers you for a limited time while you make a full application Source 55.

Ask the hospital's financial counselor or admissions office whether it does this. The coverage is temporary, so finish the full Medicaid application to keep it. The words presumptive eligibility are also used for a hospital deciding that you qualify for its own financial assistance.

What if a provider that takes Medicaid still bills me?

Show it your Medicaid approval. A provider that takes part in Medicaid must accept the Medicaid payment, plus any cost sharing Medicaid allows, as payment in full Source 66. So once Medicaid covers the care, a bill for more than that cost sharing is a problem to fix.

1. Send the provider a copy of your approval notice, with the dates Medicaid covers, and ask it to bill Medicaid for the care.
2. If you already paid, ask whether it will refund you once Medicaid pays.
3. If a debt collector has the bill, write to the collector, say that Medicaid covers the care and send a copy of the approval. The collector's notice gives you a dispute period of 30 days (CFPB, published January 29, 2024), and a written dispute sent within it pauses collection of the amount you dispute until the collector answers Source 77.
4. If the bills keep coming, contact your state Medicaid office and ask it to help.

Does Medicaid affect immigration status?

We answer immigration questions in one place: our guide on immigration status and medical bills.