Helm was cut on the right arm in the first period against the Nashville Predators on Wednesday night, and didn't return to the Red Wings' 3-2 loss in Game 1 of the first-round playoff series.
Helm played 3:08 in the first period with six shifts before tossing his glove to the ice and speeding to the locker room during a penalty kill against Nashville.
The center missed the final 10 games of the regular season after spraining the medial collateral ligament in his left knee March 17 in a collision with San Jose's Dominic Moore. Helm had nine goals and 17 assists in 69 games this season.
Meanwhile, Predators defenseman Shea Weber was fined $2,500 by the NHL (the maximum amount allowed under the collective bargaining agreement) on Thursday for a hit to the head of Red Wings forward Henrik Zetterberg in Game 1.
"We felt this was a reckless and reactionary play on which Weber threw a glancing punch and then shoved Zetterberg's head into the glass," NHL senior vice president of player safety and hockey operations Brendan Shanahan said in a statement. "We reached out to Detroit following the game and were informed that Zetterberg did not suffer an apparent injury and should be in the lineup for Game 2.
"This play and the fine that addressed it will be significant factors in assessing any incidents involving Shea Weber throughout the remainder of the playoffs."
Information from ESPN The Magazine's Craig Custance and The Associated Press was used in this report.