title: Untangling the hassle factor.
authors: Health Care Financing Administration.
authors: G R
authors: GR
authors: Wilensky
mesh_terms: D014487:Centers for Medicare and Medicaid Services, U.S.; D007345:Insurance Claim Review; D007388:Internal Medicine / Q000331:legislation & jurisprudence*; D015442:Medicare Assignment; D010819:Physician's Role; D014481:United States