Harding, who was placed on IR Wednesday in order to make an adjustment to his medication for multiple sclerosis, leads the NHL with a 1.51 goals-against average and is second with a .939 save percentage. He is tied for second with 18 wins, two behind Penguins goalie Marc-Andre Fleury.
Wild coach Mike Yeo said Minnesota was aware of Harding's condition for a "couple days."
"We've known that this was coming and we didn't feel any need to talk about it, we didn't want any distraction before our Vancouver game," Yeo said. "It's something that is a minor adjustment that we have to make. He feels great, he wants to make sure that everyone understands that.
"This is just a minor thing that he'll be ready to rejoin us right after Christmas."