Coleman suffered a seizure on the set of The Insider on February 26, 2010. Dr. Drew Pinsky, who was with Coleman at the time, assisted him until paramedics arrived.
On May 26, 2010, Coleman was admitted to Utah Valley Regional Medical Center in Provo, Utah, after falling and hitting his head and suffering an intracranial hemorrhage at his home outside of Salt Lake City, UT. He was announced to be in critical condition.  By mid-morning on May 27, 2010, Coleman was conscious and lucid. By mid-afternoon on May 27, 2010, Coleman was unconscious and on life support. On May 28, 2010, it was announced that he is still unconscious and on life support.
TMZ reports that Coleman passed away in the afternoon of the same day.