My comment was aimed more for someone without a CS background entirely. If you have sufficient CS preparation, then of course you can be admitted to a MS progra

My comment was aimed more for someone without a CS background entirely. If you have sufficient CS preparation, then of course you can be admitted to a MS program (assuming you satisfy whatever other departmental admission requirements). I'm sure there are exceptions out there/programs that accept non-traditional students. Even if you lack a CS background (assuming you already have an undergraduate degree), you can make it up in postbac programs and the like.