Surprise bills and balance billing

Balance billing is when a provider bills you for the gap between what they charged and what your plan paid. Federal law now bans it in specific situations.

Emergency care

You are protected for emergency services, including care after you are stabilised, even at a facility outside your plan's network. Your cost sharing cannot be more than it would have been in-network.

The test is the prudent layperson standard: whether a reasonable person would have believed they needed immediate care. It is not judged afterward on what the diagnosis turned out to be. You are not penalised for going to the emergency room and being fine.

The out-of-network specialist at the in-network hospital

This is the classic surprise bill. You check the hospital is in-network, and then the anaesthetist, radiologist or assistant surgeon turns out not to be, and a separate bill arrives months later.

For non-emergency care at an in-network hospital, ambulatory surgical centre, critical access hospital or hospital outpatient department, out-of-network providers cannot balance bill you. Your cost sharing is capped at the in-network level.

Where the protection stops

It is not universal, and being clear about the gaps is more useful than pretending otherwise.

Ground ambulance is largely outside these protections. In a state the size of Montana, that is not a small gap.

The protections attach to insured people using their plan. If you are uninsured or self-pay, your route is the Good Faith Estimate and the $400 dispute threshold instead.

You can be asked to waive protections in writing for some non-emergency care. Read anything you are asked to sign at check-in, and know that you are allowed to decline.

What to do with a bill you think is wrong

Get the itemised bill first, then ask the provider in writing whether the charge is subject to the No Surprises Act. Putting it in writing changes how carefully it gets read.