Post Op was the 121st episode of M*A*S*H, the 24th in the fifth season of the show, which originally aired on CBS-TV on March 8, 1977. The script was co-written Ken Levine & David Isaacs (who both also created the original teleplay) along with Gene Reynolds, who also directed the episode & Jay Folb. It originally aired on CBS on March 8, 1977.