Part six: Who wrote these laws/regulations?

Mainly doctors and insurance companies. When Medicare laws are changed the first at the table lobbying congress are the insurance companies. They are there because Medicare acts as a subsidy for their industry and if they can get laws in Medicare statutes and regulations that state how much a procedure is worth and what procedures should be used in what situations they can adopt similar corporate policies and contain cost and financial risk to themselves and spread them out amongst the government and the population in general.