"America's Got Talent" host Nick Cannon said via Twitter Wednesday he is back in the hospital for a scheduled procedure. Cannon, who is married to pop star Mariah Carey, was hospitalized earlier this month for "mild kidney failure." Details regarding his medical condition and what treatment he has been undergoing were not released to the public, but Cannon returned to work two weeks ago and said he has been feeling better. Cannon said he was back in an unnamed hospital but expected to resume working Thursday. "No worries, it's only for the day," he tweeted. Not an emergency. This was a scheduled procedure. I just dislike hospitals." Cannon did not describe the nature of the procedure.