Reference-based plans
The plan pays from a reference price, often a multiple of Medicare, instead of a contracted hospital rate.
A reference-based plan does not rely on a contracted hospital rate. It pays from a benchmark, often a percentage of Medicare. The hospital may still bill the difference between its charge and that payment. That difference is a balance bill, not a duplicate line.
Before you pay it, get three papers: the itemized bill, the plan’s explanation of benefits, and the reference the plan used. The figure review on this site checks whether the hospital’s own lines add up. It does not replace the plan’s allowed amount with a Medicare rate we have not been shown.
If the plan has a balance-bill program, ask the plan to use it and ask the hospital to pause collections while that request is open. If you also need the nonprofit charity rules, use financial assistance. If the gap is from an out-of-network clinician, use the balance-bill check.