Great news for Rachael Ostovich -- the fighter has been cleared to get back in the Octagon after her domestic violence incident ... and now her fight with Paige VanZant is BACK ON!
TMZ Sports broke the story ... Ostovich was hospitalized with a broken orbital bone and other injuries after a violent Nov. 18 incident with her husband, Arnold Berdon, who is also an MMA fighter.
Berdon was arrested and charged with felony assault -- he's pled not guilty.