The Blues activated Steen from injured reserve Friday and said he would be in the lineup Saturday against Anaheim, which is first overall in the NHL.
Steen was second in the NHL with 24 goals when the Blues placed him on IR late last month, retroactive to Dec. 21 when he was injured against Edmonton. He's second on the team with 38 points, two points behind T.J. Oshie, in 35 games with six game-winning goals.
Oshie, who has scored the Blues' last three goals, has played in 46 games.
Steen was sidelined soon after signing a three-year, $17.4 million contract extension. He missed 39 games with a concussion in 2011-12.