Medicare Part A covers emergency room visits, but only if you are admitted to the hospital afterward
If you go to the emergency room and are sent home the same day, Medicare Part A does not pay for that visit. Part A covers inpatient hospital care — meaning you stay overnight or longer. The emergency room bill itself becomes your responsibility, though you may owe only a copay or coinsurance depending on your situation.
If you are admitted to the hospital from the emergency room, Part A covers the emergency room visit as part of your hospital stay. You will owe a single deductible for the entire hospital stay, not separate charges for the emergency room visit itself.
This distinction matters because many people assume emergency room visits are always covered. They are not. The coverage depends entirely on what happens after the emergency room doctor sees you.
Key Takeaways
- Medicare Part A covers emergency room visits only if you are admitted to the hospital as an inpatient for at least one night.
- If you are treated in the emergency room and released the same day, you owe the full bill, though your actual cost depends on whether you have Part B or supplemental coverage.
- When you are admitted to the hospital from the emergency room, the emergency room visit is covered under your hospital deductible, not billed separately.
- Medicare Part B (medical insurance) may cover some emergency room costs if you are not admitted, but you will still owe coinsurance.
- If you are unsure whether you will be admitted, ask the emergency room doctor or hospital staff before treatment begins.
When Part A covers the emergency room visit
Part A coverage begins the moment you are admitted to the hospital as an inpatient. This means you have a hospital bed, a room assignment, and a plan to stay overnight. The emergency room visit that led to your admission is included in that coverage.
You will owe your Part A deductible for the hospital stay. In 2024, that deductible is $1,632 for each benefit period (the amount changes each year). This single deductible covers all emergency room, lab work, imaging, and hospital room charges during your stay — you do not pay the emergency room separately.
After you meet the deductible, you owe coinsurance for each day you stay in the hospital. For days 1 through 60, you owe nothing beyond the deductible. For days 61 through 90, you owe a daily coinsurance amount (in 2024, $408 per day). If you stay longer than 90 days, costs rise further.
When Part A does not cover the emergency room visit
If you are treated in the emergency room and sent home without admission, Part A does not pay. You are considered an outpatient, and Part A does not cover outpatient emergency room visits.
In this case, you owe the full emergency room bill. However, what you actually pay depends on what other coverage you have. If you have Medicare Part B, it may cover part of the emergency room physician's fee, though you will still owe coinsurance (typically 20 percent of the approved amount). If you have a Medigap or Medicare Advantage plan, your out-of-pocket cost may be lower.
Without any supplemental coverage, an emergency room visit can cost $500 to $2,000 or more, depending on the hospital and the services provided. The hospital will bill you directly.
The difference between observation status and admission
Some people spend a night or more in the hospital but are placed on observation status rather than admitted as an inpatient. This is a critical distinction. If you are on observation status, Part A does not cover your stay — you are still considered an outpatient.
Observation status means the hospital is monitoring you to decide whether to admit you. It can last a few hours or several days. During this time, you owe copays and coinsurance as if you were in the emergency room, not the lower costs of an inpatient stay.
Many people do not realize they are on observation status until they receive the bill. If you are staying overnight, ask the hospital staff directly: "Am I admitted as an inpatient, or am I on observation status?" The answer determines what you owe.
What Part B covers if you are not admitted
Medicare Part B (medical insurance) covers some emergency room costs if you are not admitted to the hospital. Specifically, Part B covers the emergency room physician's evaluation and any services the physician orders — lab work, X-rays, EKGs, and so on.
You will owe the Part B deductible (in 2024, $240 per year) if you have not met it yet. After that, you owe 20 percent coinsurance for most services. The hospital facility itself — the room, equipment, and nursing staff — is not covered by Part B if you are an outpatient.
This means you may receive two separate bills: one from the emergency room physician (covered by Part B) and one from the hospital facility (not covered). The facility bill is your responsibility in full.
How to find out your actual cost before treatment
Before the emergency room doctor begins treatment, ask the hospital staff: "If I am not admitted, what will I owe?" and "What is your emergency room facility charge?" Not all hospitals will give you an exact number, but many can provide a range or direct you to their financial counselor.
If you have a Medigap or Medicare Advantage plan, call your plan's customer service line before or when ready after arriving at the emergency room. They can tell you what your copay or coinsurance will be and whether the hospital is in your network.
If cost is a concern and you are not in when ready danger, you can also ask whether an urgent care center or retail clinic would be appropriate instead. These facilities are often much cheaper than a hospital emergency room for minor injuries or illnesses.
What to do if you receive an unexpected bill
If you receive a bill you believe Medicare Part A or Part B should have covered, do not ignore it. First, check your Medicare Summary Notice (the document Medicare sends you after a claim is processed) to see what Medicare paid and what you owe.
If the bill does not match your Summary Notice, call the hospital's billing department and ask them to explain the charges. Bring your insurance card and the date of service. Ask specifically whether you were admitted as an inpatient or placed on observation status — this is often where billing errors occur.
If you believe the bill is wrong, you have the right to appeal. Contact Medicare at 1-800-MEDICARE or visit Medicare.gov to file an appeal. You can also ask your state's Patient Advocate Foundation or a local legal aid organization for help.
Frequently Asked Questions
Do I have to pay anything if Part A covers my emergency room visit?
Yes. You owe the Part A deductible ($1,632 in 2024) for the hospital stay, which includes the emergency room visit. After you meet the deductible, you owe coinsurance for each day you stay in the hospital. If you have a Medigap plan, it may cover some or all of these costs.
What if I go to the emergency room but leave before being admitted?
Part A does not cover the visit. You owe the full emergency room bill, though Part B may cover the physician's services if you have it. Your actual cost depends on your coverage and the hospital's charges.
Can I ask the hospital to admit me so Part A will cover the emergency room?
No. The decision to admit you is a medical decision made by the doctor based on your condition, not a financial decision you can influence. Hospitals also face penalties if they admit patients who do not medically need admission.
Does observation status count as a hospital stay for Part A?
No. Observation status is outpatient care, and Part A does not cover it. You owe copays and coinsurance as if you were in the emergency room. Always ask the hospital staff whether you are admitted as an inpatient or on observation status.
What should I do if I cannot afford the emergency room bill?
Contact the hospital's financial information or billing department when ready. Many hospitals have programs for uninsured or underinsured patients. You can also ask about a payment plan. Do not wait for a collection notice.