Mo. Rev. Stat. § 67.210: Political subdivisions may provide health insurance benefits when, to whom.

Any political subdivision which provides or pays for health insurance benefits for its officers and employees may also provide or pay for all or part of such benefits, as may be determined by the governing body of the political subdivision, for the dependents of its officers and employees, and for retired officers and employees and their dependents and the dependents of deceased officers and employees of the political subdivision.