How many credits are there in a medical billing and coding certification?

Medical billing and coding certificate is not like a college course that has credits for the subjects/courses to be taken. Medical billing isn't exactly popular among people in the allied healthcare field. And who could blame them? Most people have a natural aversion to numbers. But what not a lot of people don't know is that medical billing presents a lot of opportunities to those who are willing to study it. This is why a number of companies offer medical billing certification training in conjunction with their basic medical training packages such as medical coding.