title: Blues leave 'em scrambling. As six plans bail out of the Medicare risk marketplace, critics question their mission.
authors.forename: C
authors.initials: C
authors.lastname: Rauber
mesh_terms: D000368:Aged; D054598:Blue Cross Blue Shield Insurance Plans; D006801:Humans; D020398:Medicare Part C / Q000191:economics*; D009937:Organizational Objectives; D020414:Risk Sharing, Financial; D012946:Social Welfare; D014481:United States