The 24-year-old goalie did not play when the Lightning defeated the Pittsburgh Penguins 4-3 on Thursday. He had been sent to Tampa to be evaluated by doctors.
Vasilevskiy is 9-3-1 with a 2.30 goals-against average and .927 save percentage in 13 games this season. He last played in a 6-4 loss to the Ottawa Senators on Saturday.
Louis Domingue made 28 saves against the Penguins. Tampa Bay recalled goalie Edward Pasquale from Syracuse of the American Hockey League on Thursday to back him up.
Domingue, 26, is 4-2-0 with a 3.36 GAA and .890 save percentage in six games this season, and is 38-46-8 in 102 games (88 starts) with a 3.01 GAA and .906 save percentage in five NHL seasons with the Arizona Coyotes and Lightning.
"A guy breaks his foot, he couldn't walk right after, then he puts a little ice [on it] and says he's good to go," Domingue said Thursday about Vasilevskiy. "I always said it would take a lot for this guy not to play, injury-wise. Unfortunately they almost had to take him out and force him not to play. I'm sure he would if he could. So the guy is a horse and it's pretty amazing to see. But it's unfortunate how it happened, but that's something that happened before on our team. We lost some big-time players and guys jumped in. A guy like (defenseman) Slater [Koekkoek], who hasn't played any games, he just goes out and he falls in. So I think everybody's eager to take an extra step or a step forward. When someone goes down, one key to our team is everybody can jump right in."