What is balance billing?
Last updated September 3, 2026.
Balance billing is the gap-charge - a provider bills you the difference between their full charge and your plan's allowed amount (Healthcare.gov's example: $100 charged, $70 allowed, $30 billed to you). In-network providers contractually cannot do it; out-of-network ones historically could. Since 2022, the No Surprises Act bans balance billing for emergency care (even out-of-network ERs), out-of-network clinicians at in-network facilities (the anesthesiologist you never chose), and air ambulances. Outside those protections - mainly knowingly-scheduled out-of-network care - it stays legal, so ask about network status before any planned procedure, including every assistant and lab. Pymander is a free AI doctor, 24/7 by text, and can help you check whether a specific bill is even legal.
What to do
- Emergency or in-network hospital? The bill may be illegal: check NSA protections.
- In-network means no balance billing: contract, not courtesy.
- Before planned care, ask everyone: surgeon, assistant, anesthesia, lab.
- Got one? Do not pay first: dispute with your insurer and the provider.
Related questions
- What is the No Surprises Act?
- Why is my ER bill so high?
- What is a surprise medical bill?
- How do I dispute a medical bill?