Three weeks after Governor Deval Patrick warned that his administration might turn down health insurance premium increases it deemed excessive for individuals and small businesses, insurers have asked the state to approve rate hikes of 8 to 32 percent for April 1. Patrick last month said the state Division of Insurance would review rate increases exceeding 4.8 percent as part of a broader effort to rein in health care expenses. If the insurers’ latest round of increases is rejected, it would mark the first time Massachusetts has capped health insurance rates. Insurers say such a move would cause confusion in the marketplace, as they already have negotiated contracts with many individuals and small businesses at the new rates. Capping the rates would also result in immediate financial losses, insurers assert, forcing them to cut payments to health providers and threatening the viability of weaker hospitals. Executives from Blue Cross and Blue Shield of Massachusetts, the state’s largest health insurer, have asked state officials to delay their decision on rates. And the Massachusetts Association of Health Plans, a trade group representing 11 other insurers in the state, has asked for time to let insurers propose cost-savings alternatives of […]