** Shares of Acadia Healthcare ACHC.O fall 18.9% to $61.35
** Co agreed to pay $19.85 mln to settle allegations it
billed for medically unnecessary inpatient behavior health
services, the U.S. Justice Department said on late Thursday
** Co will pay $16.66 mln to the U.S. government for false
billing under federal health programs - DOJ
** It will also pay $3.19 mln to Florida, Georgia, Michigan
and Nevada to resolve their state law claims - DOJ
** Co on Friday says "is cooperating fully with the
authorities regarding this matter"
** Including session's move, stock down 21.2% YTD
(Reporting by Sneha S K)
((Sneha.SK@thomsonreuters.com))