When we hire we don't go by just experience. For us the interview is key. We have an extensive hour long interview. You can tell a lot just by how a person walks into the room. Did they walk in quickly, bouncy, upbeat with a smile, or did they mosey on in. That tells alot about how they will work. Also, if we ask them about their experience and they say "I don't have any." Interview not going so well. But if they say "I don't have any in medical billing, but I'm a quick learner, and I love new things, and I researched this before I came in. Looks like something I would pick up quickly." They've still got a good chance.
In your case I might say "I don't have any work experience but I just completed my class. I'm very excited about getting a job in the medical billing field because I know I will do a good job. I am better than someone with experience because I'm not already set in my ways about how to do things, and I will start off doing things right."
I'm sure you get the idea.
Good luck
Michele