Medicare Part B covers emergency room visits, but only the doctor's services and certain tests — not the facility fee or ambulance unless specific conditions are met
When you arrive at an emergency room, Medicare Part B pays for the physician evaluation, diagnosis, and treatment you receive. This includes the doctor's time, lab work ordered in the ER, X-rays, EKGs, and other diagnostic services performed on site. However, Part B does not cover the hospital facility itself — the building, equipment, nursing staff, and overhead. That bill comes from Medicare Part A, which covers inpatient hospital stays and emergency room facility charges.
The split between Part A and Part B means you will receive two separate bills after an ER visit: one from the hospital for the facility fee (covered by Part A if you have it), and one from the physician group or emergency medicine company for the doctor's services (covered by Part B). If you do not have Part A active, you are responsible for the facility portion.
Key Takeaways
- Medicare Part B covers the doctor's evaluation and treatment in the emergency room, plus diagnostic tests like blood work and imaging ordered during your visit.
- Medicare Part A covers the emergency room facility fee, so you need both parts active to avoid a large bill for the ER itself.
- Ambulance transport to the hospital is covered by Medicare Part B only if it is medically necessary and you cannot safely use other transport.
- You will owe your Part B deductible and coinsurance (20 percent of the approved amount) for the doctor's portion of the ER bill.
- If the ER visit leads to a hospital admission, the facility charges may count toward your Part A deductible instead of being billed separately.
How the costs split between Part A and Part B
The emergency room facility fee is the largest charge on most ER bills. This covers the use of the room, equipment, nursing care, and hospital overhead. Medicare Part A pays this fee after you meet your annual deductible (which is $1,676 for 2024, though this amount changes yearly). Once you have paid the deductible, Part A covers the facility fee in full.
The physician charge is separate and smaller. Part B covers 80 percent of the approved amount after you meet your Part B deductible ($240 for 2024). You pay the remaining 20 percent as coinsurance. If the ER doctor is out-of-network, you may owe more.
If your ER visit results in a hospital admission, the ER facility charges are typically bundled into your hospital stay bill and count toward your Part A deductible. You will not see a separate ER facility invoice in that case.
When ambulance transport is covered
Medicare Part B covers ambulance transport to the hospital if a doctor or other may have access to medical professional determines it is medically necessary. "Medically necessary" means your condition is serious enough that other transport (car, taxi, friend) would risk your health. The ambulance must be operated by a Medicare-approved provider.
You pay 20 percent coinsurance for the ambulance after your Part B deductible is met. If you arrange a non-emergency medical transport service (sometimes called a stretcher van or wheelchair van), Medicare does not cover it — you pay the full cost yourself.
If you call 911 and the paramedics determine you do not need hospital-level care and refuse transport, there is no charge. If they transport you and you later refuse admission to the hospital, you may be billed for the ambulance ride.
What happens if you do not have Part A
If you have Part B only and no Part A coverage, the emergency room facility fee is your responsibility. This is often the largest bill from an ER visit — typically $1,000 to $3,000 or more depending on the hospital and your location. Part B does not cover facility fees under any circumstance.
You should have received a notice when you first enrolled in Medicare explaining whether you have Part A. If you are unsure, call Social Security at 1-800-772-1213 or log into your Medicare account online to check your coverage.
If you do not have Part A and cannot afford the ER facility bill, ask the hospital's financial information office about payment plans or charity care programs. Many hospitals have programs for uninsured or underinsured patients.
Urgent care and walk-in clinics versus the emergency room
Urgent care centers and walk-in clinics are not hospitals, so they do not charge a facility fee. Medicare Part B covers the doctor's visit and any tests performed on site, and you pay your usual 20 percent coinsurance after your deductible. The total bill is often much smaller than an ER visit.
However, urgent care is not appropriate for life-threatening conditions. If you have chest pain, difficulty breathing, severe bleeding, signs of stroke, or other emergency symptoms, go to the emergency room. Urgent care is for injuries and illnesses that need same-day care but are not when ready life-threatening — sprains, minor cuts, urinary tract infections, or flu-like symptoms.
Your out-of-pocket costs for an ER visit
Your total cost depends on whether you have met your deductibles and whether the providers are in-network. Here is what a typical ER visit costs under Medicare Part B and Part A:
| Service | Covered by | Your cost (if deductibles met) |
|---|---|---|
| ER facility fee | Part A | $0 after Part A deductible |
| Doctor evaluation and treatment | Part B | 20% coinsurance after Part B deductible |
| Lab work and imaging | Part B | 20% coinsurance after Part B deductible |
| Ambulance (if medically necessary) | Part B | 20% coinsurance after Part B deductible |
If you have not met your Part A deductible, you pay the full facility fee up to the deductible amount. If you have not met your Part B deductible, you pay the full approved amount for the doctor's services until you reach $240.
If the ER doctor is out-of-network, you may owe more than 20 percent. Ask the hospital before treatment if the ER physicians are in-network with Medicare.
What to ask your doctor and hospital
Before you leave the ER or hospital, ask for an itemized bill and ask which providers are in-network. Request the names and credentials of any doctors who treated you, because out-of-network ER physicians sometimes bill separately and at higher rates.
If you receive a bill that seems wrong — for example, a facility fee when you were only seen in urgent care, or a charge for a service you did not receive — contact the hospital's billing department and ask for an explanation. You can also file a complaint with Medicare by calling 1-800-MEDICARE.
If you have a Medigap or Medicare Advantage plan in addition to Original Medicare, your supplemental coverage may pay some or all of your coinsurance. Check your plan documents or call your plan's customer service line to understand what your ER visit will cost under your specific coverage.
Frequently Asked Questions
Do I have to pay anything upfront at the emergency room?
Most hospitals will ask for your insurance information and may ask you to sign a financial responsibility form, but they cannot refuse to treat you based on inability to pay. You typically receive bills weeks later. If you are asked to pay upfront, ask the financial counselor about payment plans or financial information programs.
What if I go to an out-of-network emergency room?
Medicare covers emergency room visits at any hospital, whether in-network or out-of-network, because emergencies are unpredictable. However, out-of-network providers may bill you more than the Medicare-approved amount. Ask the hospital billing department whether the facility and physicians are in-network before or after your visit.
Does Medicare cover the emergency room if I have a Medicare Advantage plan?
Yes. Medicare Advantage plans must cover emergency room visits the same way Original Medicare does. However, your out-of-pocket costs may differ — some plans have lower copays for ER visits, while others have higher ones. Check your plan documents or call customer service before your visit if possible.
Will my ER visit count toward my deductible if I am admitted to the hospital?
Yes. If you are admitted as an inpatient, the ER facility charges are bundled into your hospital bill and count toward your Part A deductible. You will not see a separate ER facility invoice. The doctor's charges from the ER still count toward your Part B deductible separately.
What should I do if I cannot afford the ER bill?
Contact the hospital's financial information or patient advocate office. Many hospitals have charity care programs, payment plans, or can reduce bills for patients with low income. You can also ask about programs run by your state or local health department. Do not ignore the bill — unpaid medical debt can affect your credit and lead to collection actions.