He suffered the ankle injury Monday night against the Philadelphia 76ers.
The Bulls came into the game 2-0 in Noah's absence. Kurt Thomas started in his place.
The Eastern Conference-leading Bulls are taking a cautious approach with Noah, averaging 12.1 points and 11 rebounds. Their next game is Tuesday night against Phoenix.
Coach Tom Thibodeau says Noah is "almost there."
Meanwhile, All-Star guard Derrick Rose says he was feeling fine after hurting his left ankle in the second half Friday night in a win at Detroit.
The Raptors also were short-handed, with leading scorer Andrea Bargnani missing the game because of a sore right ankle and guard Jose Calderon staying home with a sore left hamstring. Rookie Ed Davis started for Bargnani, who's averaging 21.8 points, with Jerryd Bayless filling in for Calderon.
Nick Friedell covers the Bulls for ESPNChicago.com. Information from The Associated Press was used in this report.