The Los Angeles Times says the ruling came Wednesday in a medical malpractice case against White Memorial Medical Center.
Eighty-year-old Maria de Jesus Arroyo was placed in the freezer in July 2010.
Her body was later found face down, with a broken nose and cuts and bruises to her face. The family initially sued for mishandling of the body but refiled the case two years ago after a pathologist concluded the woman most likely injured herself in a failed struggle to get out of the freezer.
A call to the hospital Wednesday seeking comment wasn't immediately returned.