The announcement was made by team president Bill Polian on his weekly radio show Monday night and later posted on the team's Web site.
The Colts (7-2) are uncertain how much time Freeney will miss. Dungy said earlier Monday he had not yet met with the doctors and he did not anticipate it to be season-ending.
But Polian said Freeney could miss four or more games because of a left foot injury that caused him to be carted into the locker room during Sunday night's 23-21 loss at San Diego. The Colts have not yet released details of the injury.
"We anticipate that Dwight will miss some significant amount of time," Polian said.
The Colts signed Freeney in July to a six-year deal, paying an average of $12 million. He has 32 tackles and 3 1/2 sacks on the season.
The 33-year-old Rice was deactivated for two games in October and has six tackles and five assists on the season. He signed a one-year, $3 million contract with the Broncos on Sept. 3.
Copyright 2007 by The Associated Press