My Mom died in 2014, in a local hospital. Several years after her death, I received a bill from that same hospital, addressed to her but sent to my address, for $9K. The kicker is, the "service date" on the bill was 1996! I ignored it since a) she had died; b) she had died in their hospital, so they obviously knew; c) her estate had settled years ago; d) she never received this bill while she was alive.

Hospital billing practice are pretty horrible. If a more compliant person had received this bill, they might have paid it, even though there is no way it was legit.