Pacioretty fell to the Bell Centre ice after he was struck by the shot at 10:02 of the second. He was helped off the ice and went to the Canadiens dressing room.
"I was told he's going to be OK," Montreal coach Michel Therrien said after the game.
The Blue Jackets led 2-1 when Pacioretty left and won 5-2 to sweep a home-and-home set from the Canadiens.
Pacioretty's 19 goals lead the Canadiens. His 36 points are second to Subban's 37.
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