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.
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Common questions
What is balance billing?
Balance billing is the gap-charge: when a provider bills you for the difference between what they charged and what your insurance allowed. Healthcare.gov's example is the cleanest: the provider charges $100, your plan's allowed amount is $70, and the provider bills you for the leftover $30. It happens when the provider is outside your network and has no contract forcing them to accept the allowed amount - in-network providers signed away the right to balance bill you, which is one quiet benefit of staying in-network. The legal landscape shifted hard in 2022: the No Surprises Act banned balance billing for emergency care (even at out-of-network ERs), for out-of-network doctors working at in-network hospitals (the anesthesiologist you never chose), and for air ambulances. Outside those protected situations - mainly scheduled care you knowingly got out-of-network - balance billing remains legal, so the survival rule is to ask about network status before any planned procedure, including every assistant and lab that might touch it. Pymander is a free AI doctor, 24/7 by text, that can help you check whether a specific bill is even legal.