Assistant Chief Coroner Ed Winter said Friday authorities also determined the cause of death this week as heart disease.
Winter couldn't say how long the remains of the 82-year-old Vickers had been in her house, but he previously said the range could have been a few months to a year.
Vickers was found April 27 by a neighbor in the dilapidated house. Among her film credits were "Attack of the 50 Foot Woman," "Attack of the Giant Leeches" and "Sunset Boulevard."
Winter said Vickers has a brother who was notified about her death.