It is without a hint of doubt that medical billing and coding can be very complicated, and thus, it must be left to the hands of the experts. Corollary to this, if you practice in bariatric surgery, your billing staff must be both equipped with the right set of skills and knowledge regarding the complexities of medical billing and coding requirements, and the documentation needed. If you are in the search of a third party medical billing service provider, you must first do this: