Mo. Rev. Stat. § 374.410

Whenever any insurer, group, association or other organization of insurers, or rating organization shall change any town grading schedule used in connection with the development of rates under policies of homeowners' insurance, dwelling-owners' insurance, renters' or tenants' insurance, or residential fire insurance written upon property located within this state, such change shall be filed with the director of the department of commerce and insurance. The director of the department of commerce and insurance may set aside any change in town grading schedules that he finds is not supported by substantial evidence and credible data acquired under sections 374.400 to 374.410.