Bill Self, who led Kansas to the national title last season, will miss his team's quarterfinal matchup against West Virginia in the Big 12 tournament on Thursday because of an illness, per a statement from the school.
The school's statement did not disclose the details of the illness but said Self is recovering.
Assistant Norm Roberts will serve as interim coach.
"Self is doing well and receiving great care at the University of Kansas Health System," the statement said.
Self was present for a shoot-around at T-Mobile Center on Wednesday and appeared to be in normal condition.