Pirri will replace Toews in the lineup for Tuesday's game against the Nashville Predators. Placing the Hawks captain on injured reserve was a procedural move to open a roster spot for Pirri.
Coach Joel Quenneville called Toews' left hand injury "not serious." Toews is eligible to come off IR when the team resumes play after the All-Star break on Tuesday in Vancouver.
"We're hopeful," Quenneville said. "We'll see how he progresses this week, but we said the injury is not serious and it's not, so hopefully he can make some good progress this week."
Quenneville said Toews saw team doctors on Monday and is "progressing" in his recovery after leaving Saturday's 5-2 loss to Nashville in the second period. Toews was slashed the night before against Florida and his injury is believed to be related to that incident, despite Toews finishing the game.
Patrick Sharp also is recovering from a hand injury. Quenneville said Sharp and Toews will travel with the team to Vancouver on Monday in advance of Tuesday's game against the Canucks, but he couldn't commit to either player participating.
Pirri skated with Andrew Brunette and Jimmy Hayes in practice Tuesday morning while Dave Bolland centered Kane and Viktor Stalberg. Marcus Kruger was in the middle between Hossa and Andrew Shaw. Jamal Mayers centers the fourth line with Bryan Bickell and either Ben Smith or Michael Frolik.
Jesse Rogers covers the Blackhawks for ESPN 1000 and ESPNChicago.com.