(a) Before the date on which a Medicare benefit change required by federal law takes effect, each entity providing in this state a Medicare supplement benefit plan existing on the effective date of the change shall file with the commissioner, in accordance with Chapter 1701:
(1) each appropriate premium adjustment necessary to produce the loss ratios originally anticipated for the applicable plan, accompanied by any supporting documents necessary to justify the adjustment; and
(2) each appropriate rider, endorsement, or plan form necessary to modify the coverage so as to eliminate benefit duplications with Medicare.
(b) A rider, endorsement, or plan form required by Subsection (a) must provide a clear description of the Medicare supplement benefits provided by the plan.