Federal health care hoops and confused providers.
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D003695:Delivery of Health Care / Q000191:economics*; D006291:Health Policy / Q000331:legislation & jurisprudence*; D006801:Humans; D009885:Ophthalmology; D015284:Physician Payment Review Commission; D011243:Preferred Provider Organizations; D015895:Relative Value Scales; D014481:United States