title: U.S. seeks to more tightly restrict doctors' billings for medical tests.
authors.forename: David
authors.initials: D
authors.lastname: Armstrong
mesh_terms: D019937:Diagnostic Techniques and Procedures / Q000191:economics*; D005251:Fees, Medical / Q000331:legislation & jurisprudence*; D033161:Government Regulation; D006801:Humans; D006278:Medicare; D018584:Physician Self-Referral / Q000941:ethics / Q000331:legislation & jurisprudence*; D010820:Physicians / Q000191:economics* / Q000331:legislation & jurisprudence; D012051:Reimbursement Mechanisms / Q000331:legislation & jurisprudence; D014481:United States