Mo. Rev. Stat. § 630.420: Affiliation agreements from vendors required.

To coordinate a delivery system of accessible department services, to integrate vendor programs into the department system and to avoid duplication of state-provided or -supported services, the department shall require affiliation agreements with vendors as a condition for receiving purchase-of-service funds. In the agreements, the department shall assign responsibility to the vendors for providing certain programs for meeting the needs of underserved, unserved or inappropriately served persons for whom the state has the responsibility to serve.