Medical billing and coding is one of the most complex aspects of the health care industry. In addition, health insurance is currently a hot debated topic among politicians and people of influence throughout the United States. A medical coding and billing specialist that takes pride in their work and is good at their job can make all the difference in the world in a patient's experience at a doctor or hospital stay. There are many different ways in which these specialists are important, but perhaps most important they help connect patients to their insurance companies. In order to fully understand this important connection, it is important to truly understand how health insurance and billing works.