Birmingham City have not appealed against the red card handed to Nikola Zigic in Saturday's defeat to Huddersfield Town.
The 32-year-old, who has scored two goals for the club this season, will therefore miss the next three fixtures against Leicester City, Millwall and Leeds United.
"At the time, from the other side of the pitch, I thought it was harsh," boss Lee Clark told reporters.
The Blues currently sit 21st in the Championship table.