The estate of the late Casey Johnson owes an unpaid bill for a rehab stay. According to TMZ the amount outstanding is almost the value of the entire estate.

Renaissance Malibu has claimed that the Johnson & Johnson heiress went to rehab there in August, 2009 with a bill totaling $74,750 yet to be paid.

Her estate is reportedly worth $75,000, which will mean that only approximately $250  would be left if the bill is paid in full.

The socialite diedof complications related to diabetes in late January.