The play occurred during Thursday night's game, which Boston won 3-0. The NHL then announced that Marchand would have a hearing with the the league's Department of Player Safety on Friday.
After the game, Brassard said the slew-foot "could've been dangerous."
"The way I fell on the ice, I maybe could've missed the rest of the season if I hurt my knee there, but luckily enough there," he said. "Marchand's a pretty good player, he's feisty, competes hard, but those kind of things, we don't want that in our game."
The Bruins are 24-15-6 on the season and in fourth in the Atlantic Division.
- Molly Geary