La. Civ. Code art. 1926
Current with changes from the 2024 legislative session, Chs. 3, 6-496, effective on or before 7/1/2024
A contract made by a noninterdicted person deprived of reason at the time of contracting may be attacked after his death, on the ground of incapacity, only when the contract is gratuitous, or it evidences lack of understanding, or was made within thirty days of his death, or when application for interdiction was filed before his death.
La. C.C. § 1926