The Reds transferred Fairchild (thumb) from the 10-day injured list to the 60-day injured list Wednesday.
The Reds placed Fairchild on the 10-day injured list Tuesday, retroactive to Aug. 26, with a left thumb sprain.
Fairchild entered Friday's game after Jake Fraley (ankle) was removed and went 1-for-3 with a two-run home run in an 8-3 loss to Milwaukee.
Fairchild started in right field and went 1-for-2 with a walk and a solo home run in Saturday's 6-4 win over the Giants.
Fairchild entered Friday's game as a pinch hitter and went 1-for-2 with a double and an RBI in a 3-2 extra-inning win over the Rays.
Fairchild is out of the lineup for the first game of Wednesday's doubleheader with Atlanta.
Fairchild started in center field and went 1-for-3 with a double, a hit-by-pitch, a run scored and a stolen base in Monday's 4-1 win over Atlanta.
Fairchild started in center field and went 1-for-3 with a stolen base and a run scored in Friday's 8-5 loss to the Nationals.
The Reds reinstated Fairchild (back) from the 10-day injured list Friday.
Reds manager David Bell said Sunday that Fairchild (spine) is expected to return from the 10-day injured list following the All-Star break, Charlie Goldsmith of The Cincinnati Enquirer reports.