Undrafted out of Manhattanville College, on January 27, 2013, Lang was released from his tryout contract with the Rockford IceHogs of the American Hockey League, and returned to the Quad City Mallards to finish the 2012–13 CHL season[1] where he was rewarded for his outstanding play by being named to the 2012–13 All-CHL Team.
On July 9, 2013, Lang was signed to a one-year deal as a free agent with the Fort Wayne Komets of the ECHL.
[2] On December 28, 2013, Lang was traded by the Komets to the Orlando Solar Bears in exchange for David Rutherford.
On July 21, 2014, Lang was rewarded for his productive season, earning a one-year AHL contract with the Toronto Marlies.
[4] In March 2019, the New York Apple Core in the junior level Eastern Hockey League announced Mickey Lang as the head coach for the 2019–20 season,[5] but was replaced at some point during the season by former Shenzhen KRS Vanke Rays head coach, Mike LaZazzera.