"After Saturday's game, Mario met with the athletic training staff," Stallings said in a statement on Vanderbilt's offcial web site. "That led to a follow-up discussion yesterday morning with our medical staff, leading to this point. It is important to note this is not a suspension and not basketball related. This is a temporary leave of absence for medical reasons.
"I ask all Vanderbilt University friends and followers to join with us in support of Mario during this process. We are hopeful he will be able to rejoin the team prior to the conclusion of our season."
The statement said Stallings would not take questions or elaborate on Moore's medical condition "in the interest of Moore's privacy."
Moore will not be discussing his situation with members of the media during this period, the release said.
Alex Gordon, a 5-11, 165 pound sophomore from Pensacola, Florida, who is averaging 4.9 points and 2.2 assists per game is expected to replace Moore in the starting lineup.