The Post-Gazette said that the fifth metatarsal bone or the outside metatarsal on his right foot was broken during the first quarter of the Steelers' win Sunday in Buffalo.
The Steelers, who have listed the quarterback's foot as sprained, denied that Roethlisberger's foot was broken in a statement Thursday. The team said the injury is simply "an aggravation of an old injury where scar tissue is present."
Roethlisberger was limited in practice Thursday, but said he plans to play Sunday against Baltimore. He has not missed a snap since returning Oct. 17 from his four-game suspension.
Roethlisberger has been wearing a reinforced shoe in practice that stabilizes the foot yet allows enough movement to play, but according to the Post-Gazette, he has a heavy limp without the shoe and has been wearing a protective boot when off the field.
Pittsburgh offensive coordinator Bruce Arians told the Post-Gazette that the injury shouldn't impact the team's game plan against the Ravens.
Information from The Associated Press contributed to this report.