Episode 11, Season 9: "Streetwise." See the Related Link below.
That's season 12 and the episode is "Locum".
It was not Law and Order SVU, it was the original Law and Order series, episode 'Killerz' (1999 season 10, episode 2). A ten year old girl hits a boy in the head with a rock and believes she can revive him with batteries, not understanding that he is dead.
The episode is season 10 and the episode is called "Transitions".
Jason Ritter appeared in the 2001 Law and Order episode, 'Teenage Wasteland'. He also appeared in the 2003 Law and Order SVU episode, 'Dominance'.
Tom Noonan appeared as the character, Malcolm Bryce, in the 2003, 'Graansha' episode of Law and Order CI; and the 2008, 'Confession' episode of Law and Order SVU he plays a character named, Jake Berlin.
Nicholas Braun appears in the 2002, 'Surveillance' episode of Law and Order SVU.
The Law and Order episode was called "Families" (season 5, episode 15) from 2004.
Tom Noonan appeared in the 2003, 'Graansha' episode of Law and Order CI; and the 2008, 'Confession' episode of Law and Order SVU.
Joseph Wiseman appeared in the 1996 episode of Law and Order called "Family Business".
Detective Ed Green is shot in the episode called 'Burn Card' (season 18, episode 14), originally aired on 4/23/08. Jesse L. Martin appeared as Detective Green in 198 episode of Law and Order, 1 episode (2005) of Law and Order: Trial by Jury, 1 episode (2001) of Law and Order CI, and 2 episodes (1999-2000) of Law and Order SVU.
The Law and Order SVU episode, 'Paternity', is from season 9, episode 9; originally aired November 27, 2007.
The original Law and Order series premiered in September 1990.