Okla. Stat. tit. 36 § 3648
The provisions of the Life, Accident and Health Insurance Policy Language Simplification Act shall apply to all policy forms subject to said act filed on or after January 1, 1990, and no policy form shall be delivered or issued for delivery in this state on or after January 1, 1992, unless approved by the Commissioner or otherwise permitted to be issued. Any policy form that has been approved or permitted to be issued prior to January 1, 1992, that meets the standards established need not be refiled for approval, but may continue to be lawfully delivered or issued for delivery in this state upon the filing with the Commissioner of a list of such forms identified by form number and accompanied by a certificate which may list all forms submitted concurrently in the manner provided in subsection D of Section 3645 of this title.
Okla. Stat. tit. 36, § 3648