Boozer will be re-evaluated Thursday.
"We'll just have to wait and see [Thursday] what type of swelling he has," Bulls head coach Tom Thibodeau said.
The injury occurred with 4:24 remaining in the fourth quarter of Wednesday's game against the Bobcats. Boozer was fouled hard by Charlotte forward Kwame Brown on a drive to the basket. The play was ruled a flagrant foul.
"He'll be all right. Hopefully he's OK. It's part of the game, but he said it's not too bad," Bulls center Joakim Noah said. "He said it hurts, but it's not broken or anything."
Boozer missed the season's first 15 games after breaking his right pinkie on Oct. 2. He is averaging 18.6 points and 9.6 rebounds per game in his first season with the Bulls.
"We're a confident ballclub and Carlos brings a lot to this team," Noah said. "Just with his physicality, just what he can do defensively. I think that losing Carlos is not something that we want, but we're capable [if he's out for a while]."
Nick Friedell covers the Bulls for ESPNChicago.com.