Express Scripts is now transitioning from faxed to electronic prior authorizations. Electronic Health Record (EHR) is the fastest way to complete an ePA and is the best tool if you’re already ePrescribing regularly. For other than authorized government activities, the DHA does not exercise any editorial control over the information you may find at other locations. Such links are provided consistent with the stated purpose of this DoD website. ExpressPAth. Once registered, providers use ExpressPAth to seamlessly submit and manage prior authorization requests across the medical and pharmacy benefits.