http://www.modernhealthcare.com/article/20160705/NEWS/160639991

A policy that lifts a 50-year ban on Medicaid pay for mental health institutions kicked in Tuesday, but it may be months before many enrollees can take advantage of the new coverage

Since the creation of Medicaid in 1965, the program has excluded payment for institutions of mental disease (IMDs) for beneficiaries 21 and over. Most residential treatment facilities for mental health and substance-use disorders with more than 16 beds did not qualify for Medicaid reimbursement.