Mo. Rev. Stat. § 632.175: Review of patient's condition, by whom, when — release or placement — copy of review to be given.

1. At least once every one hundred eighty days, the head of each mental health facility shall cause the condition of each patient to be reviewed for the purpose of determining whether the patient needs further hospitalization or should be released. If, as a result of such review, it is determined that inpatient care, treatment and rehabilitation are no longer appropriate, the head of the facility shall discharge, or initiate proceedings to discharge, the patient. If a patient meets the criteria for placement, the head of the facility shall refer him for placement.

2. In making the review required by this section, the head of the facility shall satisfy himself that the patient is receiving care, treatment or rehabilitation in the least restrictive environment available.

3. If the patient has a guardian, copies of this review and the person's individualized treatment plan shall be sent to the guardian and the court.