What is Balance Billing
Balance billing occurs when an out-of-network provider bills you for the difference between their charge and what your insurance paid — a practice now federally restricted in emergency settings by the No Surprises Act.
Balance billing is the practice of a healthcare provider billing a patient for the difference between the provider's full charge and what the patient's health insurer has paid. It typically happens when you receive care from an out-of-network provider — the insurer pays what it considers reasonable (based on its own internal benchmarks), and the provider bills you for the remaining balance.
Balance billing can produce enormous, unexpected medical bills. A provider may charge $15,000 for a procedure, your insurer pays $4,000 (its "allowed amount"), and you receive a bill for $11,000 — on top of whatever deductible and coinsurance you already owe.
How Balance Billing Happens
The most common scenarios:
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Planned out-of-network care: You knowingly see a provider outside your insurer's network. Most plans allow this (especially PPOs), but your coverage is reduced and balance billing can occur.
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Surprise out-of-network billing: You go to an in-network hospital, but a provider treating you — an anesthesiologist, ER physician, radiologist, or surgical assistant — is out-of-network without your knowledge. Until federal law changed in 2022, this was extremely common.
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Emergency care: You're taken to an out-of-network hospital in an emergency. You had no choice, but the hospital and its physicians could previously bill you as out-of-network.
The No Surprises Act (Effective 2022)
The No Surprises Act dramatically changed the balance billing landscape for many scenarios:
Now prohibited:
- Balance billing for emergency services at any facility
- Balance billing for non-emergency services at in-network facilities by out-of-network providers when you couldn't choose them (anesthesiologists, radiologists, ER physicians, etc.)
- Balance billing for air ambulance services by out-of-network providers
Now required:
- Your cost-sharing for these surprise bills is calculated at in-network rates
- Providers must give you a Good Faith Estimate for scheduled services
- You have the right to dispute bills through an Independent Dispute Resolution (IDR) process
Still permitted:
- Balance billing when you knowingly and voluntarily choose an out-of-network provider
- Balance billing in certain settings not covered by the Act
Protecting Yourself from Balance Billing
Even with the No Surprises Act's protections, being proactive helps:
- Verify network status of every provider involved in your care — the hospital, your surgeon, anesthesiologist, and any specialist consulting on your case. Check with your insurer, not just the provider's website.
- Request in-network anesthesia specifically if going into surgery at an in-network facility.
- Ask for a Good Faith Estimate before elective procedures — providers are required to give you one for scheduled services.
- Review your Explanation of Benefits carefully after care and compare it to the bill you receive.
- Dispute bills that appear to violate No Surprises Act protections through your insurer or the federal complaint portal.
For a full breakdown of how the No Surprises Act works and what to do when you receive an unexpected out-of-network bill, see our guide to surprise billing.
Negotiating a Balance Bill
If you receive a balance bill in a situation where the No Surprises Act doesn't apply:
- Don't pay immediately. Negotiate first.
- Call the provider's billing department and ask if they'll accept the insurer's allowed amount as payment in full.
- Many providers settle for 20–40% less than the balance bill — they prefer payment to collections.
- Hospital financial assistance programs (charity care) are available at nonprofit hospitals and can eliminate or significantly reduce large bills for qualifying patients.
- Medical billing advocates (who work for a percentage of savings) can negotiate on your behalf for very large bills.