Practices that used Mimecast's secure message portal to submit claims issues, questions, or appeals to Humana between July 17 and Aug. 28 will need to resubmit those reports due to a technical error. Due to the problem, more than 100 claims documents were not visible in the Mimecast portal and expired after several days. Claims issues are sent via secure, private emails, and per Humana, the error hid emails marked as private.