Who should determine when health care is medically necessary?
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D003657:Decision Making; D006801:Humans; D019458:Insurance Coverage / Q000331:legislation & jurisprudence / Q000458:organization & administration*; D007348:Insurance, Health / Q000331:legislation & jurisprudence; D017057:Medically Uninsured; D017410:Practice Guidelines as Topic; D011787:Quality of Health Care; D014481:United States