There are over 170,000 medical billers and coders working in the United States today.

Here are the facilities with the highest level of employment for medical billers and coders in 2007, according to the the Bureau of Labor Statistics:

Here are the states with the highest mean annual salaries for medical coders in 2007:

Thanks to a larger aging population, advances in technology and a focus on preventative care, health care is the most rapidly expanding industry in the US. Here is a projection of the fastest-growing health care jobs between 2006 and 2016, according to the Bureau of Labor Statistics.

Here is a breakdown of the employment numbers for some of the top health care jobs in the US.

The table below includes the number of employees working in the US for each health care occupation, as well as the percentage of the US health care workforce those employees made up. Figures are current as of 2007.

Though similar, medical billing and medical coding are two separate functions carried out by professionals in the health care industry. Though in many cases these two roles are filled by the same people, this is not always the case. Here is the breakdown between medical billing and medical coding.