An X-ray and MRI revealed a sprained wrist and coach David Blatt said they want to make sure the injury heals before James plays again.
"To the best of my knowledge there's no serious damage, but we're going to have to let him heal," Blatt said. "And if it takes 48 hours, great. If it takes longer than that, that's what it's going to be. We're certainly not looking at anything long term."
James missed Wednesday's game and is doubtful to play in Friday's game against the Kings.