A billing office may say it, and it is still the wrong answer. Hospital? Ask for "the itemized statement with the codes," every line, every charge. Doctor's office? Ask for "the claim you sent my insurance, with the procedure codes." It exists; they sent it. Billing says no? Ask medical records. Billing records are your records under federal privacy law, and they have 30 days. Either way, pull the statement from your insurance, or your Medicare Summary Notice; the reason code tells you why. Put the request in writing. Date it. Keep it. The name changes; the right does not.
Got the itemized statement, or the claim with the codes? Upload it. This reads every line so you do not have to.
Check your bill — freeThe check is free. The letter is the paid part: you print and mail it yourself, or we send it by certified mail for you. No account needed to start.
This is the general rule, in plain words. BillFighter is not a law firm and does not give legal advice. If you have been served with court papers, that is the day for a lawyer or legal aid.