Mo. Rev. Stat. § 537.069
Provisions of certain laws applicable to all causes of action.
537.069. Provisions of certain laws applicable to all causes of action. — The provisions of sections 260.552 , 408.040 , 490.715 , 509.050 , 510.263 , 537.067 , 537.068 , 537.117 , 537.675 , and 537.760 to 537.765 and 538.300 shall apply to all causes of actions accruing after July 1, 1987.
(L. 1987 H.B. 700 § 45) Effective 7-01-87 CROSS REFERENCE: Medical and health care providers, malpractice sections, 538.205 to 538.235; certain sections not applicable, 538.300