Batum returned to the locker room after the third quarter with what the team initially said was a sprained hand. After the game, the Hornets said an X-ray revealed a fracture on the third digit on Batum's left hand.
He is listed as day-to-day.
Batum didn't attempt a field goal in 11 minutes in Wednesday's victory, but he had four rebounds and two assists.
Now in his fifth season with the Hornets, Batum started 72 games last season and averaged 9.3 points, 5.2 rebounds and 3.3 assists.