A provider can bill you for a service your insurance doesn’t cover, but only if they gave you written notice and got your agreement to pay before the service was delivered. When it comes to billing patients for non-covered services, the exact form of that notice, and the timing, depends on whether the patient has Original Medicare, commercial insurance, or no coverage at all. Federal law sets a floor for each situation, and providers who skip the notice step often lose the right to collect.
What Non-Covered Means
A non-covered service is any treatment, procedure, or item a plan excludes from its benefits. Some services sit outside the plan’s scope entirely. Others fail medical necessity criteria for a particular patient. Elective cosmetic procedures, experimental treatments, and out-of-network care under plans with no out-of-network benefits are common examples. Under Original Medicare, dental care, cosmetic surgery, and hearing aids are excluded by statute and have never been part of the program’s benefit structure.1Centers for Medicare & Medicaid Services. Items and Services Not Covered Under Medicare
Medicare draws a further line worth understanding before you bill. A “statutorily excluded” service has never been a Medicare benefit. A “non-covered” service could be a Medicare benefit in other circumstances but isn’t covered in the patient’s particular case, often because it’s not considered medically necessary for the diagnosis.2Noridian Medicare. Non-Covered Services – JE Part B That distinction changes what notice you owe the patient.
Billing Medicare Patients: The Advance Beneficiary Notice
For services that could be covered by Medicare but probably won’t be in the patient’s situation, the provider must issue an Advance Beneficiary Notice of Noncoverage (ABN), Form CMS-R-131, before delivering the service.3Centers for Medicare & Medicaid Services. FFS ABN The ABN applies to Original Medicare fee-for-service beneficiaries only. Medicare Advantage plans set their own notice and coverage rules, so those patients need to check with the plan directly.1Centers for Medicare & Medicaid Services. Items and Services Not Covered Under Medicare
For statutorily excluded services, the mandatory ABN is not required, but CMS recommends issuing a voluntary ABN as a courtesy so the patient understands the charge is theirs.2Noridian Medicare. Non-Covered Services – JE Part B
What a Valid ABN Must Contain
A valid ABN identifies the specific service the provider expects Medicare to deny, explains in plain language why denial is expected, and gives a good-faith cost estimate. The estimate must fall within $100 or 25% of the actual cost, whichever is greater.4Centers For Medicare & Medicaid. Advance Beneficiary Notice of Non-coverage Tutorial The patient then picks one of three options:
- Option 1: Receive the service and have Medicare billed for an official coverage determination. If Medicare denies, the patient owes the cost but keeps appeal rights.
- Option 2: Receive the service without billing Medicare. The patient pays directly and waives appeal rights.
- Option 3: Decline the service and owe nothing.
The ABN has to be presented before the service, with enough time for the patient to consider it. A form handed over once treatment is already underway is not valid notice.5CMS. Form Instructions Advance Beneficiary Notice of Noncoverage (ABN)
What Happens If the ABN Is Missing or Defective
A provider who fails to deliver a required ABN, or delivers a defective one, cannot collect from the beneficiary. If the patient already paid, the provider must refund the money. The clock is tight: 30 days from the date the provider receives the denial notice if no review is requested, or 15 days after an adverse review determination if one is.6eCFR. 42 CFR 411.408 – Refunds of Amounts Collected for Physician Services Not Reasonable and Necessary Providers who knowingly miss those refund windows can face civil money penalties and exclusion from Medicare.7CMS. Medicare Claims Processing Manual – Chapter 30 – Financial Liability Protections
Billing Uninsured and Self-Pay Patients
When a patient has no insurance or chooses to pay out of pocket, the No Surprises Act requires providers and facilities to give a good faith estimate of expected charges before scheduled services.8CMS. Overview of Rules and Fact Sheets The estimate is what stands in for an insurer’s protection.
Timing follows the scheduling window. For an appointment booked at least 72 hours out, the estimate must reach the patient at least 72 hours before the service date. For an appointment scheduled inside that window, the estimate must go out the day the appointment is made. For same-day services, the estimate must arrive at least 3 hours before treatment.9CMS. Standard Notice and Consent Documents Under the No Surprises Act
If the final bill exceeds the good faith estimate by more than $400, the patient can open a patient-provider dispute resolution case through the federal government.10CMS. Hospital Price Transparency Frequently Asked Questions That $400 threshold is worth watching. Estimates padded well below the eventual charge invite a challenge the provider is likely to lose.
Billing Commercially Insured Patients
Private insurance has no single federally standardized form comparable to Medicare’s ABN. Providers use their own financial responsibility waivers or acknowledgment forms. The principle is the same: before delivering a service the provider believes the plan won’t cover, put the expected charge in writing and get the patient’s signed agreement to pay.
The No Surprises Act adds a specific rule for out-of-network providers working at in-network facilities. Before an out-of-network provider can bill a patient above in-network rates for non-emergency services, the patient must receive a standardized notice and sign a consent form at least 72 hours before scheduled treatment. A provider representative must be available to answer questions about the estimate, the notice can’t be bundled with other paperwork, and the patient keeps the right to refuse and seek an in-network alternative.9CMS. Standard Notice and Consent Documents Under the No Surprises Act These protections don’t reach services the plan categorically excludes, but they cover the common surprise-bill scenario of an unexpected out-of-network specialist.
Non-Covered Is Not the Same as Denied
Don’t confuse a non-covered service with a denied claim. A non-covered service sits outside the plan’s benefits entirely, and no appeal will change that; the provider can bill the patient directly if proper notice was given. A denied claim is a service the plan might have paid for, but the claim was rejected for something like missing prior authorization, insufficient documentation, coding errors, or late filing. Many of those denials are fixable through internal appeals or external review.11Consumer Financial Protection Bureau. What Should I Do If I Can’t Pay a Medical Bill?
The distinction matters at the point of billing. When a claim was denied because the provider missed a timely filing deadline or used the wrong code, most provider contracts prohibit balance-billing the patient for that provider-side error. Before assuming the patient owes the amount on the statement, check the Explanation of Benefits from the insurer to see the actual reason for non-payment.
If Proper Notice Wasn’t Given
When the notice step was skipped or done wrong, the patient’s exposure often disappears. A patient who signed no ABN, or signed one after treatment started, or signed one that failed to name the specific service or give a valid cost estimate, is in a strong position to refuse the bill and demand a refund of anything already paid.7CMS. Medicare Claims Processing Manual – Chapter 30 – Financial Liability Protections A self-pay patient billed above the good faith estimate by more than $400 has the federal dispute process. An insured patient billed by a surprise out-of-network provider without the required consent form has protections under the No Surprises Act.
For unresolved disputes on the commercial side, the state department of insurance can investigate complaints and mediate.12National Association of Insurance Commissioners. Insurance Departments Records help: itemized bills, signed forms, dates, names, and reference numbers all matter when a dispute stretches over months.