If your insurer denies your claim because it determines that the services or treatment you requested were not medically necessary, you can request an informal reconsideration of the denial.^[1] The informal reconsideration process provides an opportunity for your health care provider and the insurer to discuss your medical condition in detail and, if possible, resolve the matter without a formal appeal. You are not required to request an informal reconsideration; however, doing so may resolve your matter in less time and with less effort than is required for a formal first level appeal. You or your health care provider can call your insurer to determine if it offers this option.