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For anyone checking a medical bill · Licensed in 20 U.S. states

Your explanation
of benefits, line by line.

An explanation of benefits, or EOB, is the statement your health plan sends once it has processed a claim. It shows what the provider charged, what the plan allowed and paid, and what you may owe. It is not a bill. Here's how to read each part and match it to the bill that shows up later.

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What an EOB is

A record from your plan,
not a bill.

CMS and MedlinePlus describe what an EOB is for:

It comes after a claim.

A claim is a request for payment that you or your provider sends to the plan. Once the plan processes it, you get an EOB. It usually arrives before the provider's bill, unless you paid a copay or coinsurance at the visit.

It shows the math.

The EOB lists what was covered, how much the plan paid and to whom, and how your deductible and coinsurance were applied. It tells you what you owe, not whether you have already paid it.

It is not a bill.

Don't pay from the EOB. Wait for the provider's bill, then check it against the EOB. You may get a separate EOB for each provider or each day of care, so keep them all.

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The parts of the form

What each section of an EOB tells you.

These points summarize CMS, How to read an explanation of benefits and CMS, How to read a medical bill, read October 31, 2026. Your plan's EOB may use different labels for the same items.

Who and when. The patient, the plan, the provider, the date of service, a short description of the service, and a claim number to give if you call the plan.
Provider charges and allowed charges. The first is what the doctor or facility billed. The second is the amount the plan allows for that service, which may not be the same as the provider charges.
Paid by insurer and what you owe. The plan's share, and then your patient balance after any deductible, copay, or coinsurance.
Remark codes. Short codes, usually 2 or 3 letters and numbers, explained at the bottom of the form. On the CMS sample, one notes that the billed amount was higher than the most the plan allows.

A sample claim

One service, from charge
to patient balance.

$375.00

What the provider charged for one service on the CMS sample EOB.

$118.12

The allowed amount for that service. The plan paid $83.12 of it, and the patient owed a $35.00 copay.

$35.00

The patient balance. CMS says your bill should not be higher than the patient balance, and if it is, to talk to your provider.

Figures from the CMS sample EOB (PDF) and guidance from CMS, How to read an explanation of benefits, read October 31, 2026. They are an example, not the price of any plan or service.

Paul DanielsLicensed health advisor · NPN 20986580

Working with Paul

We compare what plans
would leave you owing.

Daniels Health Advisors is the independent brokerage Paul Daniels founded, licensed in 20 U.S. states. The patient balance on an EOB traces back to choices made at enrollment: the network, the deductible, and the copays and coinsurance. We compare those for the care you use, across Marketplace plans and, where they fit, private PPO options, so the numbers on future EOBs are easier to predict. Some private plans ask health questions, and approval is not guaranteed. Some may not cover care for health problems you had before you enrolled.

If a recent EOB confused you, bring it along. Walking through one real claim is a quick way to see how a plan works.

Networks, deductibles, and cost sharing compared for your care
Licensed in 20 U.S. states · Paul Daniels, NPN 20986580 · FL license G065122
You do not pay us for our help. We are paid by the insurance companies when you enroll. Your price for a plan is the same whether you use us or sign up on your own. Commissions can differ by company.

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Making sense of your claims in three steps.

Share a recent claim

An EOB or bill you have questions about, if you have one.

We go line by line

Charges, allowed amounts, and your share.

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How the same care would be covered under other plans.

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When the numbers differ

Match the bill
to the EOB.

If no EOB arrives, contact your plan to confirm a claim was sent. When the bill comes, it should not be higher than the patient balance on the EOB. For out-of-network bills after emergency care, or from out-of-network providers during a visit to an in-network hospital or ambulatory surgical center, the No Surprises Act may protect you. After the call you will have:

What each line on your EOB means
Whether the bill matches the patient balance
Who to call about a mismatch
When an appeal may make sense

A checklist for

Checking an EOB.

Confirm the patient, the provider, and the date of service, and that you actually got each service listed.
Compare the allowed amount with the provider charge, and the patient balance with the bill you receive.
Look up every remark code at the bottom of the form, especially on lines the plan didn't pay.
If a service was denied, keep the EOB and the denial notice. You will need both if you file an internal appeal.

EOB questions

Explanation of benefits FAQ.

What is an explanation of benefits?

An explanation of benefits (EOB) is a statement from your health plan after it processes a claim. It shows the total charges, what the plan allowed and paid, and what you may owe the provider.

Is an EOB a bill?

No. It shows what you owe but doesn't ask for payment. Wait for your provider's bill, compare it with the EOB, and pay only once the bill arrives.

Why is the allowed amount lower than the charge?

The allowed amount is the most the plan will pay for a covered service, and it can be lower than the provider's charge. A preferred, in-network provider may not bill you for the difference. An out-of-network provider may, which is called balance billing.

What does a denied claim on my EOB mean?

It means the plan didn't pay for that service. The remark code and the denial notice explain why. You can file an internal appeal within 180 days, and ask for an external review if the plan still says no.

What should I do if my bill doesn't match my EOB?

If the bill is higher than the patient balance, talk to the provider's billing office. If the EOB itself looks wrong, call the plan at the phone number printed on the EOB.

Do I have to wait for open enrollment?

Not for every plan. A private plan (not from the Marketplace) can often be bought any time of year. Some private plans ask health questions, and approval is not guaranteed. Some may not cover care for health problems you had before you enrolled. Marketplace plans, and other plans that follow ACA rules, work differently. As of October 31, 2026, under current law, open enrollment for 2027 plans on HealthCare.gov runs from November 1, 2026, to January 15, 2027. To start coverage January 1, pick a plan by December 15. States that run their own Marketplace may set different dates, so check with your state's Marketplace. A federal appeal about these rules is pending (City of Columbus v. Kennedy, 4th Cir. No. 26-1938; oral argument was set for October 30, 2026), so confirm the dates before you enroll. Outside open enrollment, you need a special enrollment period, such as one after losing job-based coverage.

See how plans would
cover your care.

Book a 15-minute call to compare plans before your next claim, or see quotes online.

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By Paul Daniels, licensed insurance agent (NPN 20986580).

Disclaimer

Daniels Health Advisors LLC is an independent brokerage, not a carrier, HealthCare.gov, or CMS. Agent: Paul Daniels, NPN 20986580, Florida license G065122. This page explains EOBs in general. The layout and labels on your EOB vary by plan, so ask your plan about any line you do not understand. The sample figures come from a CMS example, not from any plan offered to you. Tax credits, plans, networks, and prices depend on your state, zip code, income, and household. We never guarantee approval, a doctor, or a price. Not medical, legal, or tax advice.

Your explanationof benefits, line by line.

A record from your plan,not a bill.