title: APGs for outpatient surgery are controversial.
authors.forename: P
authors.initials: P
authors.lastname: Patterson
mesh_terms: D000556:Ambulatory Surgical Procedures / Q000145:classification* / Q000191:economics; D003953:Diagnosis-Related Groups / Q000191:economics*; D008484:Medicaid / Q000191:economics; D006278:Medicare / Q000191:economics; D010044:Outpatient Clinics, Hospital / Q000191:economics; D014481:United States