Hansen had a hearing with the league Wednesday afternoon. He will be docked $7,297.30 for the suspension per terms of the collective bargaining agreement.
Hansen delivered a forearm to the back of Hossa's head during the third period of the game, a 4-3 Blackhawks win.
Hossa laid face-first on the ice for a few minutes while being attended to by the Blackhawks medical staff. He eventually got to his knees and then went to the locker room under his own power but never returned.
Hansen was given a two-minute penalty for roughing.
Hawks general manager Stan Bowman told ESPN.com that Hossa wasn't hospitalized from the hit and that the initial signs were better than they were after Hossa was hit by the Phoenix Coyotes' Raffi Torres in last year's playoffs. That hit resulted in a concussion that ended Hossa's season.
After Tuesday's game, Hansen called the hit "a hockey play" and said he and Hossa "ran into each other."
"I think I kind of grazed on the back of his shoulders, and then he goes down," Hansen said. "I don't see what happens afterward because the play continues a little bit. First when I'm looking back, I see that he's down. Not quite sure what's going on."
Information from ESPN The Magazine's Craig Custance, ESPNChicago.com's Scott Powers and The Associated Press was used in this report.