House Bill 1816, also known as "The Isbill Act," amends Tennessee law to enhance the training of law enforcement and correctional personnel regarding involuntary admissions to inpatient mental health treatment. The bill mandates that the Tennessee peace officer standards and training (POST) commission develop guidelines and materials that outline the criteria for both emergency and nonemergency involuntary admissions, as specified in Title 33, Chapter 6, Parts 4 and 5. Furthermore, it requires that all law enforcement officers receive annual training based on these guidelines.

In addition to the provisions for law enforcement, the bill also requires the board overseeing correctional personnel to adopt similar guidelines and training materials for their staff. Like law enforcement officers, correctional personnel will also be required to undergo annual training on these newly established criteria for involuntary admissions. The act is set to take effect on July 1, 2027, emphasizing the importance of proper mental health training within the law enforcement and correctional systems.