According to the Essex County prosecutor in New Jersey, the 51-year-old troubled comic has spent the past two months at the sober house, and is expected to remain there for the near future.
Lange is ordered to stay at the facility until he is scheduled to appear in court, but a date has not yet been set.
An insider revealed to RadarOnline.com that Lange was spotted at a high school friend's wake last week in Union City.
"Artie looked good. He looked healthy," the insider revealed, adding that the friend who passed away had also been struggling with drug addiction.
He was released two weeks later, and sent to a rehab program immediately after.
Lange was originally arrested for heroin and cocaine possession in March 2017. He was sentenced to four years of probation.