title: '91 Medicare rates have HMOs eyeing changes.
abstract: A skimpy payment upgrade for Medicare health maintenance organizations is prompting some HMOs to consider changes in their coverage of elderly enrollees. The consequences of the money crunch vary widely depending on where the HMOs are located.
authors: P J
authors: PJ
authors: Kenkel
mesh_terms: D006279:Health Maintenance Organizations / Q000191:economics*; D015442:Medicare Assignment / Q000639:trends*; D011907:Rate Setting and Review / Q000639:trends*; D014481:United States