Health Insurance: Reasonable and Customary Fees

Charges on a medical bill
Reasonable and customary fees are one of the ways that health insurers determine how much they'll pay for medical care.

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A reasonable and customary fee is the amount of money that a particular health insurance company (or self-insured health plan) determines is the normal or acceptable range of payment for a specific health-related service or medical procedure. This article will explain how reasonable and customary amounts can affect the way your health plan covers a particular service.

Reasonable and customary fees vary from one insurer to another, and from one location to another. A reasonable and customary fee is also commonly referred to as a usual fee, a reasonable fee, or a customary fee.

An insurer will look at the average fee that all the health providers in a given area are charging for a particular service, and will base the reasonable and customary fee on that amount. In general, the insurer won't pay more than the reasonable and customary fee for a particular service, regardless of how much the medical provider bills.

Charges on a medical bill.
Lisa Bodvar / Getty Images

Managed Care Plans: Reasonable and Customary Fees Apply for Out-Of-Network Care

Almost all health plans these days are managed care plans (HMOs, PPOs, EPOs, or POS plans). In managed-care plans, as long as patients stay within the health plan's provider network, they don't need to worry about what amount is considered reasonable and customary. Instead, the insurance company will have negotiated a rate with the provider.

This negotiated rate is similar to a reasonable and customary rate, except that it varies from one provider to another, even within the same geographic area and for the same insurance company.

That's because there are other factors involved in setting the negotiated rate, including things like the volume of business that the insurance company is expected to send to the provider and the provider's track record of successful outcomes.

When a patient in a managed care plan receives treatment from an in-network medical provider, the amount the patient has to pay is based on the negotiated rate and is limited by the amount of the deductible, copay, coinsurance, or out-of-pocket maximum.

But if the patient's plan covers out-of-network care (typically only POS plans and PPOs), the reasonable and customary fee will come into play when the patient goes outside the network. That's because the out-of-network provider hasn't signed any contracts with the insurance company, and so there's no negotiated rate.

Some Examples Help to Show How This Works

Dinesh has a health plan with a $5,000 deductible, a $7,500 maximum out-of-pocket (the highest allowable for an HDHP in 2023), and a PPO network. His health plan will only pay for preventive care before the deductible (in other words, all non-preventive care is paid for by Dinesh until he's met his deductible).

His plan has 80/20 coinsurance after the deductible for in-network care. If he chooses to go outside the network, he has a $10,000 deductible and then 60/40 coinsurance until he meets a $15,000 out-of-pocket cap (note that the ACA's limits on out-of-pocket costs only apply to in-network services; there are no rules about how high out-of-pocket costs can be if you receive non-emergency care outside the network)

Dinesh goes to an in-network doctor who charges $300 for the care that Dinesh receives. But Dinesh's health insurer and his doctor have already established a negotiated price of $220 for that service. So the doctor writes off the other $80 and Dinesh has to pay $220, which will count towards his deductible.

Now let's say that Dinesh has a large claim later in the year and meets his full deductible. He chooses to get some of the extensive care outside his plan's network, so he's also reached the out-of-network deductible.

At this point, his health plan starts to pay 80% of his in-network costs and 60% of his out-of-network costs. But that doesn't mean his health plan will pay 60% of whatever the out-of-network doctor charges. Instead, they'll pay 60% of the reasonable and customary amount.

So if the out-of-network doctor charges $500 but Dinesh's insurer determines that the reasonable and customary amount is only $350, his health plan will pay $210, which is 60% of $350. But the doctor still expects to get the full $500, since she hasn't signed a contract agreeing to a lower price.

So after Dinesh's insurer pays $210, the doctor can bill Dinesh for the other $290 (this is called balance billing). Unlike the in-network doctor, who has to write off the amount of the charge above the network negotiated rate, an out-of-network provider is under no obligation to write off any amount above the reasonable and customary amount.

Note that a new federal law (the No Surprises Act) took effect in 2022, prohibiting "surprise balance billing" nationwide, with the exception of ground ambulance charges.

Surprise balance billing occurs in emergency situations or when a patient goes to an in-network hospital but then receives treatment from an out-of-network provider while at the in-network facility.

Some states had already taken action to prevent this on state-regulated plans prior to 2022. But the new federal law applies in every state, and also applies to self-insured plans, which are not regulated by the states.

Indemnity Plans: Reasonable and Customary Fees Apply, but Very Few People Have These Plans

According to the Kaiser Family Foundation's 2022 analysis of employer-sponsored health plans, only 1% of covered employees have traditional indemnity plans—almost everyone has managed care coverage instead (this has changed over the last several decades; indemnity insurance has fallen out of favor as health insurers turn to managed care in an effort to curtail costs and improve patient outcomes).

But traditional indemnity plans operate differently. They don't have provider networks, so there's no negotiated network pricing either. Enrollees can see any doctor they choose, and after the patient pays the deductible, the indemnity plan usually pays a certain percentage of the costs. But the indemnity plan pays a percentage of the reasonable and customary cost, rather than a percentage of the amount the medical provider bills. You can think of this as similar to the out-of-network scenario described above since every doctor is out-of-network with an indemnity plan.

As with out-of-network providers when patients have managed care plans, a patient with indemnity coverage is responsible for the doctor's charges above the amount that the insurance company pays. The medical provider is under no obligation to accept the reasonable and customary fees as payment in full and can send the patient a bill for whatever amount is left over after the indemnity plan pays their portion.

Patients can negotiate directly with the medical provider in this circumstance—some will reduce the total bill if the patient pays cash, for example, or will agree to set up a payment play.

Dental Procedures

Indemnity plans are more common for dental insurance than they are for health insurance, but most dental insurers now use managed care networks, and indemnity plans make up a small chunk of the total.

As with an indemnity health plan or out-of-network care on a PPO or POS health plan, dental indemnity coverage operates based on reasonable and customary fees. The plan will typically have a deductible, and will then pay a percentage of the reasonable and customary fee for a particular dental service. The patient will be responsible for paying the rest of the dentist's fee.

When Reasonable and Customary Fees Are Used, You May Have to Seek Reimbursement From Your Insurer

When your health plan is using reasonable and customary fees (as opposed to a network negotiated rate), it means that there's no network agreement between your health plan and the medical provider you're using.

This is either because you're going outside your plan's network or because you have an indemnity plan. Keep in mind that if you have a health plan that doesn't cover non-emergency out-of-network care at all, which is generally the case with HMOs and EPOs, you're going to have the pay the full bill if you go out-of-network. In that case, reasonable and customary fees won't be part of the equation, as your insurer won't be paying anything (with the exception of emergency care, and the surprise balance billing scenarios described above).

When the medical provider doesn't have an agreement with your insurer, they might not be willing to send the bill to your insurer. Instead, they may expect you to pay them in full (note that this will be whatever they charge—not the reasonable and customary fee) and then seek reimbursement from your insurance company.


The term "reasonable and customary" refers to the amount that a health insurance plan has determined to be reasonable for a particular medical service. If out-of-network care is received, the insurer will base their payment (if they cover out-of-network care) on the reasonable and customary fee, rather than the amount that the medical provider bills. This is important in terms of understanding how much the patient will ultimately have to pay for the treatment.

A Word From Verywell

If you're receiving medical care with a provider who doesn't have a contractual agreement with your insurance company, make sure you understand in advance how the billing will work. If you're going to have to pay the full bill and then seek partial reimbursement from your insurer, the doctor may let you pay part of it up front and then wait to pay the rest until you receive the reimbursement from your insurer. But again, this is something you're going to want to sort out in advance so that you and your medical providers are on the same page.

7 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Reasonable and customary fees.

  2. American Dental Association. Types of dental plans.

  3. Hoadley, Jack; Lucia, Kevin; Kona, Maanasa. The Commonwealth Fund. State Efforts to Protect Consumers from Balance Billing. January 18, 2019.

  4. Internal Revenue Service. Revenue Procedure 2022-24.

  5. Appleby, Julie. NPR. Congress Acts to Spare Consumers From Costly Surprise Medical Bills. December 22, 2020.

  6. Kaiser Family Foundation. 2022 Employer Health Benefits Survey.

  7. Indemnity health plan.

By Michael Bihari, MD
Michael Bihari, MD, is a board-certified pediatrician, health educator, and medical writer, and president emeritus of the Community Health Center of Cape Cod.