Pacioretty appeared to be injured after smashing his head on the boards following a hit from Florida's Dmitri Kulikov, who was given a minor interference penalty on the play.
As of Sunday night, Pacioretty leads the NHL in plus/minus with a +38 rating. Pacioretty leads the Canadiens in points with 67.
The Canadiens earned a 4-1 victory over the Panthers on Sunday despite Pacioretty's early exit.
Montreal has just two games remaining before the playoffs. The Canadiens have clinched a playoff spot, though they have not yet clinched their division and they trail the Rangers by one point for the top spot in the Eastern Conference.
- Stanley Kay