B.com computer application

I’m doing b.com computer application. Further I want to pursue my studies in US and instead of commerce I wanna opt for computer field. So what all courses are available?

Yes you can, read : http://redbus2us.com/can-you-apply-to-different-specialization-or-major-for-ms-in-usa-change-majors/ . You can apply to any of the schools in US. Check out the universities degrees and programs for the list of courses as part of the degree program.