He had been in a coma for the entirety of his hospitalization. He was 28 years old.
On Tuesday, the Broward County Medical Examiner determined the cause of death was a probable drug overdose, per TMZ.
Samman's friend and roommate, Troy Kirkingburg, was found dead at the scene where Samman was discovered on Sept. 29
Hollywood Police suspected a drug overdose, according to Karl Etters of the Tallahassee Democrat, though Samman's mother released a statement that said no heroin had been discovered in the fighter's system.
Hollywood Police Department spokesperson Miranda Grossman said that no signs of foul play were discovered at the scene, per Etters.
Samman appeared on the 17th season of UFC's The Ultimate Fighter, featuring on Jon Jones' team. He fought five times in the UFC, going 3-2 and defeating Eddie Gordon and Caio Magalhaes in "Performance of the Night" showings. He also wrote a memoir, The Housekeeper: Love, Death & Prizefighting, which discussed his addiction struggle and the tragic death of his girlfriend in a car accident.