Major League Baseball chief baseball officer Joe Torre announced the punishment, which also includes an undisclosed fine.
The suspension was set to begin Monday night when the Braves open a series against the Dodgers in Los Angeles. But Gausman filed an appeal, so he will be able to make his scheduled start against the Dodgers.
The incident occurred in Urena's first plate appearance in the bottom of the second inning, an apparent payback for Urena plunking Atlanta outfielder Ronald Acuna Jr. on Aug. 15 last season.
Gausman's 97-mph fastball sailed behind Urena, but he was immediately ejected by home plate umpire Jeff Nelson.
Gausman, 28, is 1-2 with a 4.83 ERA in six starts this season.
--Field Level Media