Mo. Rev. Stat. § 191.210: Attendance of patient by private physician.

Any person having any relative committed to the custody of any institution under the control of the state department of social services may, at their own expense, employ a licensed physician or other qualified practitioner to administer treatments to such patients. Persons so employed shall confine such treatment to the individual patient concerned. The state shall not be liable for any additional cost incurred as a result of the employment of such persons.