Despite objections from regulators, health insurers Blue Shield of California and Aetna Inc. are proceeding with double-digit rate increases that state officials said were unreasonable. Officials at the California Department of Managed Health Care said increases that average more than 11% for about 47,000 individual and small-business policyholders of Blue Shield and Aetna were unreasonable. But state officials don't have the authority to reject changes in premiums, and increasingly health insurers refuse state demands to lower rates.
