Getting a bill for a medical procedure or an appointment you thought your insurance would cover can throw you for a loop. But if you think the bill was sent to you in error or you believe the amount listed is wrong, you can—and should—fight back. First, though, you need to know common mistakes to look for, as well as what your insurance plan does and does not cover.
Start by reviewing your insurer’s explanation of benefits. Was the service in network—that is, from providers that have typically agreed to reduced reimbursement from your insurance company? Next, call your insurer and ask the insurance representative to explain why the claim was denied (in part or in full), why certain services weren’t covered and what you need to do to fix it.
Source: Kiplinger