PIP & Med-Pay rules in Illinois

If you were just hit on I-90 or a side street in Chicago, one of your first questions is probably who pays the medical bills. In Illinois the answer runs through a fault-based system, not the no-fault "PIP" arrangement you may have heard about from other states. That difference changes who pays and how quickly.

Illinois drivers file a lot of these claims. In Chicago alone, thatcarhitme.com counted 109,112 reported crashes in 2025, down slightly from 112,055 the year before,¹ with 9,461 in January 2026 by itself.² Knowing what your policy actually covers before the bills land is worth a few minutes.

Illinois has no PIP, because it isn't a no-fault state

Personal Injury Protection, or PIP, is a feature of no-fault states, where your own insurer pays your medical costs regardless of who caused the crash and your right to sue the other driver is limited. Illinois doesn't work that way. It's a traditional fault (or "tort") state, so the driver who caused the wreck, along with that driver's liability insurer, answers for the injuries and damage.³ There is no PIP mandate here, and no Illinois statute makes an insurer sell or even offer PIP.

That means you have no no-fault bucket to draw from automatically. You either use optional coverage you bought, use your health insurance, or pursue the at-fault driver.

What Med-Pay is, and why it's optional

Medical Payments coverage, usually shortened to Med-Pay, is Illinois' closest cousin to PIP. The Illinois Department of Insurance defines it as coverage for "medical and funeral expenses for you or your passengers if injured or killed in an accident in your vehicle."³ It's first-party coverage, so it pays out of your own policy.

Med-Pay is optional in Illinois. The state's required coverages are liability and uninsured motorist protection, not Med-Pay,³ so no law sets a minimum Med-Pay limit or forces insurers to include it. When it is offered, it usually comes in modest amounts, commonly a few thousand dollars up to about $25,000, added on top of your liability policy. It coordinates with your health insurance rather than replacing it, and many people carry both so a copay or a gap in the health plan doesn't come out of pocket.

How Med-Pay pays after a crash

The appeal of Med-Pay is speed. It pays regardless of fault, so you don't have to prove the other driver was to blame before it kicks in. It generally covers you, your family members, and your passengers,⁴ and it usually carries no deductible. It can go toward ambulance charges, an ER visit, a hospital stay, imaging, surgery, and, per the state's own definition, funeral costs.³

Because it ignores fault, Med-Pay is useful in the situations that leave you exposed in a tort state, like a hit-and-run or a crash you partly caused. Illinois reduces your recovery from the other driver by your own share of blame, and bars it entirely if you are more than 50% at fault,⁵⁶ so fault-blind Med-Pay is a real backstop when responsibility is contested.

What Illinois actually requires instead

Since Med-Pay is optional, it helps to know the coverage the state does mandate. Every Illinois auto policy has to carry liability limits of at least $25,000 for injury to one person, $50,000 per crash, and $20,000 for property damage, written as 25/50/20.⁷ Those minimums have held since January 1, 2015.⁷

Illinois also requires uninsured motorist (UM) bodily injury coverage, and it has to match your liability limits, at least $25,000 per person.⁸ Buy UM limits above the state floor and underinsured motorist (UIM) coverage comes with them,³ and insurers must also offer UM property damage coverage with a $250 deductible.⁸ UM and UIM stand in for the at-fault driver when that driver has no insurance or not enough. In a fault state, they matter more than most drivers assume.

The collateral source rule works in your favor

Here's an Illinois rule that helps injured people. Money paid on your behalf from a source independent of the at-fault driver, including your Med-Pay and your health insurance, does not reduce what you can recover from that driver. The Illinois Supreme Court reaffirmed this collateral source rule in Wills v. Foster, 229 Ill. 2d 393 (2008), and adopted a "reasonable value" approach to medical bills, so the at-fault driver can't shrink the bill just because your own coverage already paid part of it.⁹

In plain terms, tapping your Med-Pay first doesn't let the person who hit you off the hook. You can use Med-Pay for immediate bills and still pursue the full reasonable value of your care.

Subrogation and the common fund doctrine

There's a catch. When your own insurer pays your medical bills through Med-Pay, it often has a subrogation or reimbursement right, meaning it can claim part of any settlement you later collect from the at-fault driver. Illinois softens that with the common fund doctrine. Because your lawyer created the recovery the insurer is now reaching into, the insurer has to carry a proportional share of your attorney fees and costs. The Illinois Supreme Court set this out in Scholtens v. Schneider, 173 Ill. 2d 375 (1996).¹⁰ In practice it often trims a Med-Pay lien by roughly a third, the same fraction as a typical contingency fee. The same rule reaches a health insurer's lien, so both of your first-party payers help fund the recovery they're recouping from.

So Med-Pay reimbursement isn't a full clawback. The insurer helps pay for the work that produced the money it's getting back.

Deadlines that still apply

None of this coverage helps if you miss a deadline. In Illinois you have two years from the crash date to file a personal injury lawsuit,¹¹ and five years for property damage claims such as vehicle repairs and diminished value.¹² Med-Pay itself is a contract claim against your own insurer, so check your policy for its notice and proof-of-claim deadlines and report the crash promptly.

If your car also lost resale value, that runs on the separate five-year property track; you can read how those claims work in the Illinois diminished value guide. To document any claim, start with the official Illinois crash report.

Lining up your coverage

Illinois gives you no automatic PIP safety net, so the medical side of a crash usually moves through optional Med-Pay, your health insurance, and a fault claim against the driver who hit you. Med-Pay earns its keep by paying while fault gets sorted out, and the collateral source rule means using it doesn't cost you leverage. When the injuries or the insurance fight are serious, a lawyer can order these coverages correctly and handle the liens; you can find one through the thatcarhitme.com legal directory.

This is general information, not legal advice.

Sources

thatcarhitme.com, Chicago Year-over-Year Crash Report 2025 vs 2024. https://thatcarhitme.com/crash-data/illinois/chicago/2025-annual-report
thatcarhitme.com, Chicago Crash Report January 2026. https://thatcarhitme.com/crash-data/illinois/chicago/january-2026-report
Illinois Department of Insurance, Auto Insurance Shopping Guide. https://idoi.illinois.gov/consumers/consumerinsurance/auto-insurance-shopping-guide.html
Illinois Department of Insurance, Auto Insurance Definitions. https://idoi.illinois.gov/consumers/consumerinsurance/auto-definitions.html
Illinois Department of Insurance, Comparative Negligence. https://idoi.illinois.gov/consumers/consumerinsurance/comparative-negligence.html
735 ILCS 5/2-1116, Illinois General Assembly. https://www.ilga.gov/legislation/ilcs/documents/073500050K2-1116.htm
625 ILCS 5/7-203, Illinois General Assembly. https://www.ilga.gov/legislation/ilcs/fulltext?DocName=062500050K7-203
215 ILCS 5/143a, Illinois General Assembly. https://www.ilga.gov/legislation/ilcs/fulltext?DocName=021500050K143a
Wills v. Foster, 229 Ill. 2d 393 (2008), CourtListener. https://www.courtlistener.com/opinion/2060702/wills-v-foster/
Scholtens v. Schneider, 173 Ill. 2d 375 (1996), Illinois Supreme Court. https://law.justia.com/cases/illinois/supreme-court/1996/79686.html
735 ILCS 5/13-202, Illinois General Assembly. https://www.ilga.gov/documents/legislation/ilcs/documents/073500050k13-202.htm
735 ILCS 5/13-205, Illinois General Assembly. https://www.ilga.gov/documents/legislation/ilcs/documents/073500050k13-205.htm

PIP & Med-Pay Rules in Illinois