An exclusive Malibu rehab facility has filed a claim against Casey Johnson's estate -- a claim that would wipe out all of her assets.
TMZ has obtained legal docs in which Renaissance Malibu claims Casey went to rehab there in August, 2009. Renaissance claims the $74,750 bill has not been paid.
TMZ first reported Casey's entire estate was valued at around $75,000 -- which would leave $250 if the claim is paid in full.
According to the docs, Casey spent 30 days at the facility and then received additional days of therapy.
Casey Johnson Rehab Claim Filed
4/22/2010 7:55 PM PDT BY TMZ STAFF
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