A new study by the Pew Charitable Trusts finds that many states could save millions of dollars a year on correctional healthcare services if they were to expand their Medicaid programs under the Affordable Care Act. Pew surveyed prison healthcare costs in 44 states and saw recent significant increases in 35 of them, primarily due to the aging of and increases in the prison population. Some states, such as North Carolina, saw a cost increase of more than 200 percent. Should a state such as Ohio use Medicaid funds to treat prisoners, it would save as much as $273 million between next year and 2022. Michigan would save about $250 million. Medicaid funds cannot be used to treat inmates on prison grounds, but can be used if they're treated at a facility off-site. Study (.pdf)