Relates to segregated confinement

This bill prohibits segregated confinement (solitary isolation) for three specific groups: juveniles under 21, individuals with mental illness or developmental disabilities, and those with permanent physical disabilities that substantially limit major life activities (like walking or seeing). It also requires the commissioner to publish quarterly reports on segregated confinement use, including related self-harm incidents. Facility rules must now specify that any segregated confinement sanction must be the minimum necessary duration for maintaining order. The law takes effect 180 days after enactment.