Bagley was injured in the second quarter of the Kings' 130-125 loss to the Golden State Warriors and did not return.
The No. 2 overall pick in this year's draft will be re-evaluated in 10 to 14 days.
Through 26 games, Bagley is averaging 12.7 points, 6.1 boards, and one block per contest.
Entering Saturday's play, the Kings sit ninth in the Western Conference with a 15-13 record.