Out-of-network coinsurance is the percentage of costs you pay for care from a provider who isn't in your plan's network, after you've met your out-of-network deductible. It's almost always higher than what you'd pay for the same service from an in-network provider.
For example, your plan might charge 20% coinsurance for an in-network specialist visit but 40% coinsurance for the same visit out-of-network. On a $500 bill, that's $100 in-network versus $200 out-of-network, and the out-of-network bill could be even higher because the allowed amount may be lower than what the provider charges, leaving you responsible for the balance.
Here's why out-of-network coinsurance can be especially costly: many plans have a separate, higher deductible for out-of-network care. You may need to meet that out-of-network deductible before coinsurance kicks in. And some plans don't count out-of-network costs toward your out-of-pocket maximum at all, meaning there's no cap on what you could spend.
HMO and EPO plans typically don't cover out-of-network care at all (except emergencies), so out-of-network coinsurance doesn't apply; you'd pay the full cost. PPO and POS plans do cover some out-of-network care, but at these higher coinsurance rates.
The No Surprises Act protects you from surprise out-of-network bills in emergency situations and at in-network facilities. But for planned, non-emergency out-of-network care, you're responsible for the higher coinsurance.
It depends on your plan. Some plans have a separate out-of-network out-of-pocket maximum; others don't count out-of-network costs toward any maximum at all. Check your Summary of Benefits and Coverage for specifics.
For planned out-of-network care, yes: the provider can bill you for the difference between their charge and your plan's allowed amount, on top of your coinsurance. The No Surprises Act protects against balance billing in emergencies and certain other situations, but not for care you choose to get out-of-network.
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