"Ronnie is suspended indefinitely for failure to adhere to the standards of our program," coach Jim Christian said in a statement. "Our focus will turn to the active players on our team and finishing up the remainder of our season strong."
Moss led the Horned Frogs averaging 15.7 points per game, but the team had announced that he did not make the trip to play New Mexico on Wednesday due to personal reasons.
TCU has lost eight of its past nine games and is last in the MWC standings.
Diamond Leung covers college basketball for ESPN.com.