Yes, I hear this all the time. I know that the fancy course 6 kids here on HN would poo-poo it, but it's a very common usage in scientific computing. I can imagine the origins and can hypothesize about why it persists (the festering petri dishes of programming culture that is "grad school"), but don't have a definitive answer.

John Tukey is widely credited with coining the term "software" in print in 1958, but I'll wager that "codes" actually predates that.