Medicare Part B Emergency Room Copay: What You Need to Know

Medicare Part B typically covers 80% of the cost of emergency room services.

You're responsible for the remaining 20% copay, which can be a significant expense.

The Medicare Part B copay for emergency room services is $150 for the first day of treatment, and then $300 for each additional day.

This copay can be a financial burden, especially if you're not prepared.

You may be able to reduce your out-of-pocket costs by choosing a Medicare Advantage plan that offers additional coverage for emergency room services.

Some Medicare Advantage plans may also have lower copays or coinsurance for emergency room visits.

Medicare Part B is the component that most often covers ER visits, as emergency services are usually considered outpatient care. This means you can get coverage at any emergency department in the United States.

Examples of Part B-covered services for emergency care include emergency exams with medical professionals, lab tests and imaging scans, medical and surgical procedures, some medications, and a stay in a hospital for observation.

You'll still have to pay some money toward the costs of your ER visit, including a copayment for each ER visit, a copayment for each medical service you get, and a coinsurance of 20% of the Medicare-approved cost of each service. The Part B deductible is $257 in 2025.

You have to be up to date on your usual monthly premiums and have paid the year's deductible for Part B to get this coverage. This means you'll have to pay the Part B deductible of $257 before Original Medicare starts to pay.

Here are the typical costs you'll pay for an ER visit covered by Medicare Part B:

These copayments and deductibles may vary on a yearly basis.

You can visit any emergency department in the US without worrying about network limitations, as long as you have Medicare Part B coverage. However, you'll still have to pay some money toward the costs of your ER visit.

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Typically, you pay a Medicare emergency room copayment for the visit itself and a copayment for each hospital service. Your actual Medicare urgent care copay amount can vary widely, depending on the services you require and where you receive care.

You'll be responsible for paying a copayment for each ER visit, as well as a copayment for each medical service you get. You'll also have to pay a coinsurance of 20% of the Medicare-approved cost of each service.

In 2025, the Part A deductible is $1,676 per benefit period, and the Part B deductible is $257 per year. This means you'll have to pay the deductibles before your Medicare coverage kicks in.

Here's a breakdown of the costs you can expect to pay:

Keep in mind that these costs can add up quickly, so it's essential to be aware of them before visiting the emergency room.

Staying overnight at an ER does not automatically qualify someone as an inpatient. The hospital or freestanding emergency department should confirm during the visit whether or not they are providing treatment on an inpatient basis.

Suggestion: Which Part of Medicare Covers Inpatient Hospital Charges

Part A will pay for your hospital stay and the services that you received when you were an outpatient, but Part B will pay for your doctor's services if you're admitted to the hospital.

If you visit an ER, receive treatment, and then return within 3 days as an inpatient, Part A can help cover the inpatient care and pay for the copayments from your ER care.

You're 65 or have a disability, that's the basic requirement for Medicare eligibility. This is a straightforward rule that applies to most people.

Reaching age 65 is the primary requirement, but what about those who qualify due to disabilities or conditions? These individuals may also qualify for Medicare coverage.

Staying overnight at the ER doesn't automatically qualify someone as an inpatient, and that's worth remembering.

Additional reading: Minimum Funding Requirement

You arrive at an ER via ambulance, and a medical team provides oral medications you can take yourself, which Part B does not cover. If Medicare agrees that your ambulance use was medically necessary, it will help pay the costs.

Medications given in the ER may not be covered by Part B, but Part C plans with extra drug coverage may cover them. This is a good thing to consider if you have a Part C plan.

The hospital or freestanding emergency department should confirm during the visit whether or not they are providing treatment on an inpatient basis. This is crucial to determine who pays for what.

Part B may help cover all ER services, excluding the medications you took.

A Medicare plan can be overwhelming, especially when you're trying to understand the costs involved.

A deductible is an annual amount that you must spend out of pocket before your insurer starts funding your treatments.

Coinsurance is a percentage of a treatment cost that you'll need to self-fund, and for Medicare Part B, this comes to 20%.

You'll also encounter copayments, which are fixed dollar amounts that you pay when receiving certain treatments.

Here's a quick rundown of these costs in a table:

To get Medicare Part B coverage, you must pay the yearly Part B deductible. Once you've met your deductible, Medicare kicks in and pays its share.

In order for your Medicare Part B coverage to kick in, you must pay the yearly Part B deductible.

Medicare pays its share after you've met your deductible, and you pay yours in the form of a copay or coinsurance.

Curious to learn more? Check out: Does a Copay Count towards Deductible

Medicare Part B can help pay for ambulance transportation to an emergency department, but you usually have to pay 20% of the costs as coinsurance.

Medicare Part B will cover ambulance transportation only in a ground vehicle, such as a van, to the nearest appropriate healthcare facility.

You must meet one of the following criteria to be covered: you need emergency care and traveling in another way would damage your health, or you have a written order from a doctor confirming that ambulance transport is medically necessary, or ground ambulances cannot get you to appropriate care quickly enough.

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If you use an airplane or helicopter, ground ambulances cannot get you to appropriate care quickly enough.

Medicare Part C plans may also cover ambulance transport at a similar level, but you should check with your Part C insurer directly to confirm your coverage and costs.

If you use an ambulance and don't meet your Part B or Part C plan's criteria for coverage, your insurer will let you know with a notice called an Advance Beneficiary Notice of Noncoverage.

Here are the criteria for ambulance coverage:

Medicare emergency network rules are designed to ensure you receive necessary care without worrying about network limitations.

Network limitations usually don't apply to emergency care, so you're covered to go to any emergency department.

If you do go to an out-of-network healthcare facility, your plan can't charge more than $50 or your plan's usual in-network costs for emergency care — whichever is less.

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Having a plan for a potential emergency room visit is crucial, so plan to have it billed under Part B.

You can talk with a Medicare expert at Fair Square Medicare to ensure you aren't caught off guard with a huge bill.

Give them a call at 1-888-376-2028 for assistance.

It's always better to be prepared and have a plan in place, especially when it comes to unexpected medical expenses.