Mo. Rev. Stat. § 208.221
For reimbursement or recoupment cases filed pursuant to subsection 3 of section 208.156, jurisdiction is as outlined therein. The administrative hearing commission shall render a decision within three hundred days of filing the appeal. For each day the proceeding is continued or delayed by appellant, the time frame for rendering a decision is extended by one day. If the commission does not render a decision within three hundred days of filing, or as extended, the appellant may seek the same appeal in the circuit court of Cole County or in the circuit court where the facility is located. The circuit court performing review in lieu of the administrative hearing commission herein shall perform its review under the same guidelines and restrictions as the administrative hearing commission, except that the circuit court shall retain authority to render final decisions of law.
§ 208.221, RSMo