That’s what Wikipedia says. I’m surprised to see that it was around as late as 1967, after Bonnie and Clyde. But it generally got weaker as it went on. Joe Breen was the guy original in charge of enforcing it, and he retired in 1954. But it’s right that the era right before it went into effect was racier than anything you’d see until there was some distance from Breen’s administration, and the era right after it went into effect was the strictest. This led to strange stuff like the shoot out in Angels with Dirty Faces where you are allowed to see a cop’s arm poking through a window when they get shot, but they couldn’t show the rest of their body, or movies like Woman in the Window that had strange endings shoehorned in to make them less immoral. Or the fact that they couldn’t say “pregnant” in Stagecoach, or make the woman look pregnant, even though she gives birth (off screen, of course) in the movie.

Blowup was 1966 and I know that was one of the final blows to The Code, since it played in mainstream theaters without Hays Office approval. It was pretty clear that the Hays Code had already been defanged if movies like Psycho and the James Bond series were being approved.