The allowed amount is the number your plan treats as the price of a service. Every other figure runs off it — what the plan pays, what you owe, what counts toward the deductible — and it is almost never the number printed on the provider’s bill. For an in-network service it is the rate the plan and the provider contracted for. Out of network it is a figure the plan derives by its own method, described somewhere in the plan documents and rarely anywhere else.

In network, the provider has already agreed to it. The charge on the bill can be several times larger, and the difference between that charge and the allowed amount is written off. It is not a discount you have to ask for, and it is not yours. What you owe is your cost sharing calculated on the allowed amount: 20% coinsurance means 20% of the allowed amount, never 20% of what was billed. Reading the charge line and panicking is reading the wrong line.

Out of network there is no such agreement, but the plan still sets an allowed amount and still pays only a share of it. Everything above that number is a question rather than a settled write-off. This is why a plan advertising “30% coinsurance out of network” does not mean you pay 30% of the bill — you pay 30% of the plan’s allowed amount, plus whatever sits above it. It is also why an out-of-network superbill reimburses less than people expect. The plan pays its percentage of its own allowed amount, not a percentage of what you actually handed over at the desk.

In New York: in specific situations the argument over that number is taken out of your hands entirely. For an out-of-network clinician who treated you inside a participating facility, for emergencies, and for ground ambulances — which federal law leaves out and the state does not — the surprise-billing framework routes the dispute into independent dispute resolution between the provider and the plan. You owe in-network cost sharing; the two of them argue about the rest without your mailbox involved. Whether that reaches you at all depends on plan type, because a self-funded employer plan is federally regulated and New York’s framework does not touch it.

Where the number is actually visible is the explanation of benefits your plan sends after a claim. It shows the charge, the allowed amount, what the plan paid, and a patient responsibility line. That last line is the one to hold any bill against. A provider asking for more than it, outside a situation the surprise-billing rules cover, is the point at which you have something to dispute rather than something to pay — and knowing whether the provider was in the network for your specific product, on the date of service, is what settles which of those it is.

Also called: allowable charge, negotiated rate, eligible expense. Full guide: Surprise medical bills in New York.

More in Glossary of health coverage and billing terms

  • Fair hearing — The state's review of a decision about your Medicaid, with two different deadlines that people routinely confuse.
  • Managed Long Term Care (MLTC) — The plan that authorizes and pays for long-term home care in New York. It is the payer, not the care itself.
  • Dual eligible — Having Medicare and Medicaid at the same time, which covers premiums, cost sharing and the long-term care Medicare does not.

This page explains how the system works. It is not medical advice. More.