Mo. Rev. Stat. § 630.220: Court actions by department on behalf of institutions — interest on accounts of patients.

For all debts and demands whatsoever to any of the residential facilities or day programs subject to the control of the department, and for all damages for failure of contract, for trespass and other wrongs to a facility operated by the department, or any of its property thereof, real or personal, actions in any court of competent jurisdiction may be maintained in the name of the director. Interest shall be recovered on any and all sums due any facility or program operated or funded by the department on account of any patient or resident thereof, the account therefor, certified by the director or the director's* designee shall be prima facie evidence of the amount due.