The trade is contingent on Carcillo passing a physical with Los Angeles by July 23.
If Carcillo plays 40 or more games with the Kings in the 2013-14 season, the Blackhawks receive a fifth-round pick instead.
Carcillo, 28, had two goals and an assist in 23 games for the Blackhawks last season, as well as one assist in four games as Chicago won the Stanley Cup.
He has been plagued by injuries during the past two seasons. Carcillo had season-ending knee surgery on Jan. 17, 2012, limiting him to 28 games in 2011-12. He injured his right knee in the Blackhawks' 2012-13 season-opener and was limited to 23 games.
Carcillo was the Pittsburgh Penguins' third-round pick (No. 75) in the 2005 NHL Draft, but was traded to the Phoenix Coyotes on Feb. 27, 2007. He had a career-best 13 goals and 24 points with Phoenix in 2007-08 -- when he also led the NHL with 324 penalty minutes. He scored 12 goals and 22 points for the Philadelphia Flyers in 2009-10, helping the Flyers advance to the Stanley Cup Final, where they lost to Chicago.
In 333 NHL games, Carcillo has 40 goals, 87 points and 1,079 penalty minutes. He has five goals and 12 points along with 75 penalty minutes in 37 playoff games.