Can your medical insurance company retroactively bill you for an increase in premium that they made?

It depends on the specific laws and regulations in your jurisdiction, as well as the terms and conditions of your insurance policy. In general, insurance companies are not allowed to retroactively bill policyholders for premium increases. However, there may be certain circumstances where this is permitted, such as in cases of fraud or misrepresentation on the part of the policyholder, or if the increased premium is due to a change in coverage or benefits.

If you are being retroactively billed for a premium increase, it is important to contact your insurance company to understand the specific reason for the increase and to determine your rights and options. You may also wish to consult with an attorney who specializes in insurance law for further guidance.