The team announced Fisher's absence Thursday about three hours before the start of the deciding game in the second-round series between the NHL's top two teams.
The Predators called Fisher day-to-day in the first update since he left in the first period of Game 6 on Monday. He skated just five shifts for 2:58 in that game.
Calle Jarnkrok is expected to replace Fisher as Nashville's fourth-line center.
Fisher, 37, came out of retirement late in the season to rejoin the team he helped lead to the Stanley Cup Final a year ago.
The winner of Game 7 will face the expansion Vegas Golden Knights in the Western Conference final, which begins Saturday.