Fairness in Medicare Bidding Act or FIMBA - Amends part B (Supplementary Medical Insurance Benefits for Aged and Disabled) of title XVIII (Medicare) of the Social Security Act to repeal the Medicare competitive acquisition program for durable medical equipment and prosthetics, orthotics, and supplies (DMEPOS).
Rescinds specified unobligated balances of all discretionary appropriations, except those for the Department of Defense (DOD) or the Department of Veterans Affairs (VA). Directs the Office of Management and Budget (OMB) to determine and identify each account, program, project, and activity to which this rescission and its amount shall apply.