I'm not sure what you mean. In a corporate job ladder, anyone who isn't strictly a manager and writes at least SOME code is classified as an IC. That's not to say that there are no managers who also write code, though.
Yeah and I'm saying, from experience, people 'fall into' being a manager by nature of informal mentorship relationships that happen in person, but now you have to more aggressively 'opt-in' to be a manager.