Competitive bidding for hospital services.
D054598:Blue Cross Blue Shield Insurance Plans; D002140:California; D003164:Competitive Bidding / Q000639:trends*; D005376:Financial Management / Q000639:trends*; D007350:Insurance, Hospitalization / Q000639:trends*; D008484:Medicaid / Q000458:organization & administration; D008923:Missouri; D009820:Ohio; D011243:Preferred Provider Organizations / Q000458:organization & administration; D014481:United States