A Michigan doctor can legally send you a bill two years after your appointment. No state law sets a deadline for when a provider has to bill, so the outer limit is the six-year statute of limitations for contract claims under MCL 600.5807(9).1Michigan Legislature. MCL – Section 600.5807 – Revised Judicature Act of 1961 (Excerpt) Whether you actually owe the full amount is a different question. Your insurance company’s filing rules, federal protections for uninsured patients, and nonprofit hospital charity-care requirements can all reduce or wipe out what the provider can collect.
Why Two Years Is Still Within the Legal Window
Medical debt in Michigan is treated as a contract: the provider delivered services, you agreed to pay. The six-year clock runs from the date of service, not the date the bill arrived.1Michigan Legislature. MCL – Section 600.5807 – Revised Judicature Act of 1961 (Excerpt) A provider who waits two years, or even five years and eleven months, can still bill you and still sue to collect. Once six years pass without a lawsuit being filed, the debt is time-barred and a court should dismiss any collection case.
One trap to avoid on an old bill: making a partial payment can restart the statute of limitations. If you believe a debt is close to or past the six-year mark, do not send money or sign anything acknowledging the debt before confirming where you stand.
Did the Provider Miss Your Insurance Filing Deadline?
This is usually the most important question with a late bill. Insurers require providers to submit claims within strict windows, and when the provider blows the deadline, you often owe nothing beyond what you would have paid had the claim been processed on time.
Medicare
Providers have 12 months from the date of service to submit a Medicare claim. After that, Medicare denies it.2Noridian Medicare. Timely Filing – JE Part A When the late filing is the provider’s fault, the provider cannot bill you for the services. You remain responsible only for the deductible or coinsurance you would have owed on a timely claim.3Centers for Medicare & Medicaid Services. Pub 100-04 Medicare Claims Processing – Changes to the Time Limits for Filing Medicare Fee-For-Service Claims A two-year-old Medicare bill is almost always past this deadline.
Medicaid
Michigan requires providers to bill a Medicaid qualified health plan within one year of the date of service or hospital discharge.4Michigan Legislature. MCL – Section 400.111i A claim submitted late gets denied, which can shield you from the balance.
Private Insurance
Private insurers set their own filing deadlines through provider contracts, usually somewhere between 90 and 180 days after the date of service. When the provider misses that contractual deadline and the insurer denies the claim on timeliness grounds, most in-network provider contracts bar the provider from billing you for the denied amount. Call your insurer, ask whether the provider submitted the claim on time, and if they didn’t, get a written statement confirming you are not responsible. Send a copy to the billing office with a short letter refusing the charge.
If You Were Uninsured or Paid Cash
For scheduled care, providers must give uninsured and self-pay patients a written good faith estimate of expected charges before the appointment. The estimate is due within one business day of scheduling when the service is at least three business days out, or within three business days when the service is at least ten business days out.5eCFR. 45 CFR 149.610 – Requirements for Provision of Good Faith Estimates
If a late bill arrives for charges that exceed the estimate by $400 or more, you can challenge it through the federal Patient-Provider Dispute Resolution process.6Centers for Medicare & Medicaid Services. No Surprises – What’s a Good Faith Estimate You have 120 calendar days from receiving the bill to file, and it costs $25 to initiate. While the dispute is pending, the provider cannot send the bill to collections, charge late fees, or retaliate.7Centers for Medicare & Medicaid Services. Good Faith Estimate and the Patient-Provider Dispute Resolution Process for Uninsured or Self-Pay Individuals A neutral reviewer decides whether you owe the billed amount, the estimated amount, or something in between, and issues a decision within 30 business days.
If the Bill Is From a Nonprofit Hospital
Nonprofit hospitals must maintain a written financial assistance policy and give patients a meaningful chance to apply before pursuing aggressive collection, under Section 501(r)(6) of the Internal Revenue Code. The hospital must wait at least 120 days after your first billing statement before taking any extraordinary collection action, and it must accept financial assistance applications for at least 240 days from that first statement.8Internal Revenue Service. Billing and Collections – Section 501(r)(6)
The timing matters on a late bill. Those windows run from the date of your first post-discharge billing statement, not the date of service. A two-year-old bill effectively resets the 240-day application window the moment it arrives, so you likely have months to apply for charity care or a reduced balance. Hospitals can also accept applications after 240 days at their discretion. Ask for the financial assistance application before you agree to any payment.
What to Do When a Late Bill Arrives
Request an itemized bill first. It should show every charge, the dates of service, and what your insurance has already paid. Older bills carry more coding errors and duplicate charges, so compare each line against your records and any explanation of benefits statements.
If the services should have gone through insurance, call the insurer and confirm whether the claim was submitted on time. If it wasn’t, that is often the end of the matter. If the bill is legitimate but the amount is more than you can pay, call the billing office. Many providers offer payment plans or discounts for prompt payment, especially when the delay was on their end.
When direct negotiation stalls, Michigan’s Community Dispute Resolution Program runs mediation centers in every county that handle thousands of cases a year at low or no cost. Mediation is voluntary, informal, and faster than court, and it tends to produce workable outcomes in billing disputes.9Michigan Courts. Community Dispute Resolution Program You can find your local center through the Michigan Courts website.10Michigan Courts. CDRP Centers
What Happens If You Don’t Pay
A provider who can’t collect through normal billing has several escalation routes, each with legal limits.
Collections
Providers often turn unpaid accounts over to third-party collection agencies, which must follow the Fair Debt Collection Practices Act. The FDCPA prohibits harassment, false representations, and unfair practices, and it applies to third-party collectors rather than the original provider.11Cornell Law School. Fair Debt Collection Practices Act The collector must send a written validation notice within five days of first contact, and you have 30 days to dispute the debt in writing. On a two-year-old bill, requesting validation is a smart first move because the collector must then produce documentation before pursuing you further.
Lawsuit and Judgment
If collection fails, the provider can sue in Michigan court as long as the six-year statute of limitations has not expired. A judgment accrues interest at 1% plus the average yield on five-year U.S. Treasury notes, compounded annually.12Michigan Legislature. MCL – Section 600.6013 Resolving a disputed bill before it reaches court is almost always cheaper.
Garnishment and Liens
With a judgment, the provider can garnish wages or place a lien on your property. Michigan follows the federal garnishment cap: a creditor can take the lesser of 25% of your disposable earnings or the amount by which your weekly disposable earnings exceed 30 times the federal minimum wage. Disposable earnings are what’s left after legally required deductions like taxes and Social Security, not voluntary ones like insurance premiums or retirement contributions. A property lien attaches to your real estate and must be paid off before you can sell or refinance. None of these tools are available without a court judgment first, and you have the right to appear and raise defenses like an expired statute of limitations or a missed insurance filing deadline.
Will a Late Bill Hurt Your Credit?
It can. The Consumer Financial Protection Bureau finalized a rule in early 2025 that would have banned medical debt from credit reports, but a federal court vacated that rule in July 2025 after finding it exceeded the CFPB’s authority under the Fair Credit Reporting Act.13Consumer Financial Protection Bureau. CFPB Finalizes Rule to Remove Medical Bills from Credit Reports Medical collections can still appear on your credit report under current law.
The three major credit bureaus voluntarily stopped reporting medical collections under $500 and remove medical debt that gets paid, but those policies are not legally binding and could change. If a provider sends a two-year-old bill straight to collections without giving you a real chance to pay or dispute it, the credit damage can be real. Opening the envelope and acting fast is the best protection.