Who Pays Your Medical Bills After a Car Accident?
After a car accident, multiple insurance layers may cover your medical bills. The payment hierarchy depends on your state, your coverage, and who caused the crash. Here is a complete breakdown.
In This Guide
- MedPay (Medical Payments Coverage)
- PIP (Personal Injury Protection)
- MedPay vs PIP Comparison
- Health Insurance as Secondary Payer
- Bodily Injury Liability (BI)
- Uninsured/Underinsured Motorist (UM/UIM)
- What Happens When You're Uninsured
- Medical Liens & Letters of Protection
- How Subrogation Works
- Workers' Compensation
1. MedPay (Medical Payments Coverage)
MedPay is an optional add-on to auto insurance that pays medical bills after a car accident regardless of fault. No liability investigation is needed, so payment is fast — typically within days.
Key MedPay Facts
- Primary payer: Medical providers bill MedPay first
- No deductible, no copay
- Per-person limits: $1,000 - $100,000 (most popular: $5,000)
- Cost: Under $10/month to add. Upgrading $2K to $10K costs ~$10/year
- Required only in Maine (minimum $2,000/person)
- Subrogation: Yes — MedPay insurers CAN seek reimbursement from at-fault party
What MedPay covers: Hospital/ER bills, doctor visits, surgery, X-rays, diagnostics, ambulance transport, dental work from injury, and funeral expenses (some policies).
What MedPay does NOT cover: Lost wages, household services, pain and suffering.
Typical MedPay Limits
| $1,000 | Bare minimum, common on budget policies |
| $2,000 | Common default |
| $5,000 | Most popular selection |
| $10,000 | Recommended for most drivers |
| $25,000 | Higher-end standard option |
| $50,000 - $100,000 | Available from some insurers |
2. PIP (Personal Injury Protection)
PIP is a broader no-fault coverage that pays medical expenses, lost wages, and other economic losses regardless of who caused the accident. Required in 12 states.
States Requiring PIP
*Florida repealing PIP July 1, 2026. **Choice states.
What PIP covers (broader than MedPay):
- Medical expenses (typically 80% of reasonable/necessary costs)
- Lost wages (typically 60% of lost income)
- Rehabilitation expenses
- In-home care and household services
- Funeral expenses and survivor/death benefits
Key difference from MedPay: PIP generally does NOT have subrogation rights, meaning the insurer cannot seek reimbursement from the at-fault party.
3. MedPay vs PIP: Side-by-Side Comparison
| Feature | MedPay | PIP |
|---|---|---|
| Covers medical bills | Yes | Yes |
| Covers lost wages | No | Yes (60%) |
| Covers rehab/household | No | Yes |
| Fault required? | No | No |
| Subrogation rights | Yes (most states) | No (generally) |
| Typical limits | $2K - $25K | $3K - $50K |
| Required states | Maine only | 12 states |
| Cost | Under $10/month | Included in premium |
4. Health Insurance as Secondary Payer
Auto insurance (PIP/MedPay) pays first. Health insurance becomes the secondary payer once auto coverage limits are exhausted.
Important: Subrogation
Health insurers typically have subrogation clauses allowing them to seek reimbursement from your personal injury settlement. This means they may demand repayment of medical bills they paid, reducing your net settlement proceeds. This can be negotiated by your attorney.
Payment Priority by State Type
No-fault states: PIP is primary. Health insurance is secondary.
At-fault states: MedPay (if available) is primary. Health insurance is secondary. The at-fault driver's BI coverage pays through settlement.
5. Bodily Injury Liability (BI)
The at-fault driver's BI coverage pays for the other party's medical bills, lost wages, and pain/suffering. This is the primary way injured parties recover compensation in at-fault/tort states (the majority of US states).
The average BI claim payout is approximately $29,400 (2026 estimate), up 81% since 2016.
How BI Claims Work
- Injured party files claim against at-fault driver's insurance
- Insurance adjuster investigates liability and damages
- Medical bills, lost wages, and pain/suffering are calculated
- Negotiation between adjuster and claimant (or their attorney)
- Settlement or lawsuit
- Payment from at-fault driver's BI policy up to policy limits
Key Limitation
BI only pays up to the at-fault driver's policy limits. If your medical bills exceed those limits ($25,000 per person in most states), you must pursue other sources: UM/UIM, health insurance, or a lawsuit against the driver personally.
6. Uninsured/Underinsured Motorist Coverage (UM/UIM)
UM/UIM protects you when the at-fault driver has no insurance (UM) or insufficient insurance (UIM) to cover your damages.
- UMBI: Covers medical bills for you and passengers when at-fault driver is uninsured
- UMPD: Covers vehicle damage from uninsured at-fault driver
About half of all states require UM/UIM coverage. Average cost: ~$199/year nationally.
How it works: If the at-fault driver has no insurance, file directly under your UM coverage. If they have insufficient insurance, file against their insurance first; once their limits are exhausted, file under your UIM for the remainder.
7. What Happens When You're Uninsured
An estimated 15.4% of drivers (about 1 in 6.5) are uninsured nationally. If you're injured and the at-fault driver has no insurance:
States with Highest Uninsured Rates
Your options without insurance
- UM/UIM coverage (if you carry it) pays your medical bills and damages
- Letter of Protection from an attorney allows treatment now, payment from settlement later
- Hospital financial assistance programs (most non-profit hospitals are required to offer them)
- Medicaid if you qualify (has mandatory subrogation — federal super-lien)
- Negotiate directly with hospitals for reduced self-pay rates
- Lawsuit against the uninsured at-fault driver personally (difficult to collect)
Without insurance, hospitals may bill you at chargemaster rates, which are on average 164% higher than negotiated insurance rates. See our self-pay guide for how to negotiate these bills down.
8. Medical Liens & Letters of Protection
When the injured person has no insurance or insufficient coverage, and an attorney is involved, medical providers can treat on a deferred-payment basis using a Letter of Protection (LOP).
How the LOP Process Works
- Injured person retains a personal injury attorney
- Attorney issues a Letter of Protection to medical providers
- LOP guarantees payment from the eventual settlement
- Providers treat the patient without upfront payment
- Provider files a medical lien against the case
- After settlement, medical liens are paid before the client receives remaining funds
Lien Negotiation
Attorneys commonly negotiate medical liens down by 30-50%. This is standard practice and an important way clients receive more net compensation. Medical lien amounts are often based on chargemaster rates, which gives significant room for negotiation.
Risk: Even if the case is lost or settles for less than expected, the patient may still owe the full billed amount to the provider. LOPs are not risk-free.
9. How Subrogation Works
Subrogation is the right of an insurance company to seek reimbursement from the at-fault party after paying your medical bills. It directly affects how much of your settlement you keep.
| Payer Type | Subrogation Rights? | Notes |
|---|---|---|
| MedPay | Yes (most states) | Can seek reimbursement from at-fault party |
| PIP | No (generally) | No right to seek reimbursement |
| Health Insurance | Yes | Can claim reimbursement from settlement |
| Workers' Comp | Yes | Can subrogate against at-fault party |
| Medicare/Medicaid | Yes (mandatory) | Federal super-lien; must be repaid |
10. Workers' Compensation (Work-Related Crashes)
If the crash occurred while driving for work-related purposes (not commuting), workers' compensation may cover your medical bills and lost wages.
- No-fault system: No need to prove the other driver caused it
- Covers even if you were at fault (unless under the influence)
- Does NOT cover regular commuting
- Can file both a workers' comp claim AND a personal injury claim against the at-fault driver
- Covers: Medical bills, wage replacement, rehabilitation
- Does NOT cover: Pain and suffering (unlike BI claims)