After a hospital stay or a rehab stay, the bills arrive in pieces. One envelope holds a summary, another a statement from a doctor's group, and a third says the insurer processed a claim and you owe a balance. Each one looks final. Most of them are not. A summary gives you the total. It does not show you what made the total.

Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.

Ask for the itemized statement

Call the billing office of every provider that sent a bill and ask for an itemized statement covering the dates of service. Use the word itemized. It means a separate line for each charge, with a date, a code, a quantity, and an amount. Write down the name of the person you spoke with and the date you asked. If the office sends only a summary, ask again and ask when the line items will come.

Match it to the insurer's statement

The insurer sends its own explanation of benefits for each claim. Put that page next to the provider's itemized bill. For each date of service, check that the provider named on the insurer's page is the same one on your bill. Check that the billed amount matches. Then compare the amount the insurer allowed, the amount it paid, and the amount it says is your share. If those numbers do not add up, mark the line. At this stage you are not starting a fight. You are only finding the lines that do not match.

Look for the charges that repeat or drift

Some lines push a bill up without anyone noticing. Look first for two charges for the same service on the same day. Next, look for a supply or equipment line for something that never reached the room. Then check for a visit billed on a day she was not seen, or by a provider you do not recognize. Check whether a room or facility fee fits the number of days she was actually there. Finally, check whether a test or visit was billed by a provider outside the insurer's network when you were told the provider was in network.

Ask the questions that can change the number

For each marked line, ask four things. Was this provider in network on that date? Which codes were used, and can the office tell you what each code describes? Is this charge part of the stay, or was it billed separately, and if separately, who ordered it? And what is the review or appeal process for a line you dispute, including the deadline? Write the deadline on your sheet the day you hear it. Missing it is the one mistake you cannot fix later with a phone call.

Keep one log, not a drawer of envelopes

Make one sheet with these columns: provider, date of service, amount billed, amount the insurer says it paid, amount you were asked to pay, and status (paid, disputed, or waiting). Beside each row, note the name, date, and reference number of every call about it. Keep the paper too. When the next bill comes, check it against the sheet before you write a check. A line that already shows as paid is a bill you should question.

When the calls are taking the day

This work is slow and it can eat the hours you need for her. Someone else can make the calls, read the lines aloud to you, or keep the sheet, and that person does not need to be medical staff for any of this. If the paperwork is wearing down the day sheet, look at the local help page for St. Louis options to get someone to share it with you.

Local Help for Husband Caregivers lists where to start. Bring the sheet with you when you call, so the first question you ask is about the line you already marked.

The Itemized Bill Is the Real Bill: Check the Lines Before You Pay Any of Them