January 19, 2022 11:49 Updated Follow Yes. If you are on Medicare Part B or D, the annual letter from Social Security is enough proof for reimbursement. Related articles Can my RMBA be used to reimburse me for the cost of insurance premiums for coverage provided on the ACA exchange (the “Marketplace”)? Will my INPRS benefits be reduced once I start getting Social Security? What happens to the funds in my RMBA if I'm a retired participant and I don't submit any reimbursement claims for 6 months or longer? If I have an interruption in state service two years from now with a RMBA balance of several thousand dollars and I return a few years later, what happens when I later receive an unreduced retirement benefit and have more than 15 years of service? What happens to my RMBA if I leave state employment before I retire?