Yes, Medicare Part B covers emergency room visits. What surprises people is how the cost is built: a copay for the visit, a copay for each hospital service, and 20% for the doctor. This guide explains what you pay and the rule that can erase the copay entirely.
What Medicare covers in the ER
Medicare Part B covers emergency department services, meaning the care you get in a hospital emergency room when you have an injury, a sudden illness, or an illness that quickly gets much worse. If it is a true emergency, you are covered at any hospital that can help you, and you do not need prior approval.
One important limit: Medicare only covers emergency services outside the United States in rare situations, so an ER visit while traveling abroad is generally not covered. If you travel internationally, our guide on Medicare coverage when you travel abroad explains the narrow exceptions.
How the cost works
Emergency room billing has more moving parts than a typical doctor visit, so it helps to see them separately:
- A copayment for the ER visit, charged by the hospital.
- A copayment for each hospital service you receive during the visit, such as tests or treatments.
- 20% of the Medicare-approved amount for your doctor's services, after you meet the Part B deductible ($283 in 2026).
Because several copayments can stack up in a single visit, an ER trip can cost more than people expect. A Medigap policy or other supplemental coverage may help cover those copayments and coinsurance.
The 3-day rule that can erase your ER copay
Here is the part worth knowing in advance. If your doctor admits you to the same hospital for a related condition within 3 days of your emergency room visit, you do not pay the emergency room copayment(s). Medicare then treats the ER visit as part of your inpatient stay, which is covered under Part A rather than billed as a separate outpatient ER visit.
That shift matters, because Part A has its own hospital deductible per benefit period. Whether you are formally admitted as an inpatient or kept in the hospital under observation can change what you owe, which is why the inpatient-versus-observation status distinction is worth understanding if you end up staying at the hospital.
| Cost piece | What you pay |
|---|---|
| Emergency room visit | A copayment to the hospital |
| Each hospital service in the visit | A copayment for each one |
| Your doctor's services | 20% of the Medicare-approved amount after the $283 Part B deductible |
| Admitted to the same hospital for a related condition within 3 days | No ER copay; the visit becomes part of your inpatient (Part A) stay |
| Emergency care outside the U.S. | Generally not covered (rare exceptions) |
Frequently asked questions
Yes. Medicare Part B covers emergency department services when you have an injury, a sudden illness, or an illness that quickly gets much worse. You do not need prior approval to get emergency care.
You pay a copayment for the ER visit and a copayment for each hospital service, plus 20% of the Medicare-approved amount for your doctor's services after the $283 Part B deductible. Because the copays can add up, supplemental coverage like Medigap may help.
If your doctor admits you to the same hospital for a related condition within 3 days of your ER visit, you do not pay the ER copayment. Medicare considers the visit part of your inpatient stay, which is covered under Part A instead.
Generally no. Medicare only covers emergency services outside the United States in rare situations, so emergency care while traveling internationally is usually not covered. See our travel-abroad guide for the narrow exceptions.
Learn More
- What Is Medicare? Parts A, B, C, and D explained
- Observation status and the hospital trap
- Medicare coverage when you travel abroad
- How much does Medicare cost in 2026?
If you want help understanding what an emergency room visit will cost you under Medicare, find personalized guidance at brevy.com.
The information on Brevy.com is for educational purposes only and is not a substitute for professional legal, financial, or medical advice. Rules vary by state and program and change frequently. Always verify with the relevant agency or a qualified professional. Brevy is not a law firm, financial advisor, or healthcare provider.