Itachi’s death occurs at the end of the long-anticipated showdown between the Uchiha brothers. The battle spans several episodes (starting roughly around episode 135), taking place in the ruins of the Uchiha hideout.
While Episode 138 marks Itachi's physical death, his true story is revealed shortly after in what episode did itachi die
Itachi actually dies twice in the series. The answer above refers to his original, permanent death. Itachi’s death occurs at the end of the
To understand the full weight of the episode, here’s the sequence of events: here’s the sequence of events: