To amend title XIX of the Social Security Act to provide a higher Federal matching rate for increased expenditures under Medicaid for mental and behavioral health services, and for other purposes.

Medicaid Bump Act of 2017 This bill amends title XIX (Medicaid) of the Social Security Act to increase the Federal Medical Assistance Percentage (FMAP) to 90% with respect to increased state Medicaid program expenditures for mental and behavioral health services. In general, a state's FMAP may range from 50% to 83% under current law.