Perunovich will be eligible to play in Game 4 against Minnesota.
Perunovich, 23, has been out of the lineup since Jan. 16 due to a left-wrist injury.
This season, the Hibbing, Minnesota, native appeared in 19 regular-season games for the Blues, logging six assists. Perunovich also dressed in 17 regular-season games for the Blues' AHL affiliate, the Springfield Thunderbirds, recording 22 points (three goals, 19 assists) and eight penalty minutes.