If you have a medical bill that you forgot to include in your bankruptcy are you still liable to pay for it even if it was done before you file bankruptcy and later found out the insurance didn't pay it?

Yes, it is still considered your debt, even though you have had a bankruptcy discharge. You could try reopening the BK filing and adding the debt on. That however is complicated and expensive. Your best option IMO, is negotiate with the creditor.

The Bankruptcy Code says a debt is not wiped out if it was not listed (see 11 U.S.C. 523(a)(3)), but there is some case law (not applicable in all jurisdictions) that says it IS wiped out in a Chapter 7 case IF it was inadvertently missed, IF the Chapter 7 was declared a "no asset" case, and IF the debt was of the sort that it would have been discharged had it been properly listed.

In this situation, one could call their bankruptcy attorney and ask how much it would cost to reopen the case and add the creditor to the bankruptcy. The Court charges a reopen fee of $155.00 and an amendment fee of $26.00, plus the attorney would charge his or her fees to do the work. Then, one could ask the medical creditor how much they would settle the claim for.

Whichever is cheaper is probably the best thing to do.

Please note that nothing in this posting or in any other posting constitutes legal advice; this is simply my understanding of the facts, which I do not warrant, and I am not suggesting any course of action or inaction to any person.