Mental Illness - As introduced, requires the commissioner of mental health and substance abuse services to study issues relating to the need for revisions to statutes governing mandatory outpatient treatment in light of the experience of the pilot project concerning assisted outpatient treatment under Tennessee Code Annotated, Section 33-6-624 and to report the findings and recommendations of the study to the health committee of the house of representatives and the health and welfare committee of the senate on or before January 15, 2019. - Amends TCA Title 33.