Cash's character was accidentally shot by a bullet meant for his father, Sonny Corinthos, earlier this month. According to a source close to the actor, Cash didn't see the ousting coming.
During his six years with the show, Cash earned numerous awards, including a 2003 Young Artist Award in the Best Performance in a TV Series by a Young Actor Ten or Younger category.
Becaue it's unlikely the show would kill off a child, General Hospital spoilers state the character is expected to remain in a coma for awhile. From there, there's speculation that Michael will be "aged," emerging from his unconscious state as a young adult.
If the show does move forward with plans to recast Michael, former As the World Turns Jesse Lee Soffer (ex-Will Munson) is believed to be a leading candidate for the part.