The term large deductible policy also includes policies that contain an aggregate limit on the insured's liability for all deductible claims in addition to a per-claim deductible limit. The primary purpose and distinguishing characteristic of a large deductible policy is the shifting of a portion of the ultimate financial responsibility under the large deductible policy to pay claims from the insurer to the insured, even though the obligation to initially pay claims may remain with the insurer. Large deductible policies do not include policies, endorsements, or agreements which provide that the initial portion of any covered claim shall be self-insured and further that the insurer** shall have no payment obligation within the self-insured retention. Large deductible policies also do not include policies that provide for retrospectively rated premium payments by the insured or reinsurance arrangements or agreements, except to the extent such arrangements or agreements assume, secure, or pay the policyholder's large deductible obligations;
§ 375.1605, RSMo