Yes, it is possible to appeal or request an upgrade of your discharge status, particularly if it was other than honorable. The process involves submitting an application to the Discharge Review Board (DRB) or Board for Correction of Military Records (BCMR). A successful upgrade can lead to reinstating benefits such as healthcare and GI Bill eligibility.
An attorney specializing in military law can help guide you through the process and improve your chances of a favorable decision.