Can computer science undergraduate go for masters in creative writing (MFA) in US?

A lot of schools have MFA programs (too many to list here; try doing a search), and most of them won't disqualify you because of your undergraduate background, as long as you've taken some English courses. But your portfolio will need to be even more outstanding than the already highly competitive entries from native speakers who've had an undergraduate focus in the subject, and you're really going to limit your options if you refuse to take the GRE. (If you did so well on the TOEFL, I'm not sure why you'd refuse anyway.)