Lee broke a bone in his left wrist when he was hit by Chicago's Carlos Marmol on Aug. 3. The move is retroactive to Aug. 10.
Lee, who was acquired from Baltimore on July 30, missed four games, but returned Monday and played two games in San Francisco. He was batting .278 with two home runs and three RBIs in five games since the trade.
Infielder Josh Harrison was recalled from Triple-A Indianapolis. It is his third stint with the Pirates in 2011. He has gone 25-for-95 (.263) with five RBIs and 12 runs scored in 30 games.