Hall, who has 15 goals and 31 points in 36 games in his second NHL season, was assisted to the dressing room after being cut in the forehead by teammate Corey Potter's skate, NHL.com reported.
The mishap occurred during the pregame skate before the Oilers' contest against the Columbus Blue Jackets at Nationwide Arena.
The accident was another blow for the Oilers, who have already lost fellow high-scoring youngsters Jordan Eberle and Ryan Nugent-Hopkins to injuries.
Hall was the No. 1 overall selection in the 2010 NHL Draft.