Coverage for a qualified secondary beneficiary will terminate on the earliest of any of the following: 18 months after the date of the applicable change in status; The date on which the qualified secondary beneficiary becomes eligible for hospital, surgical, medical, or major medical benefits under any insured group contract or any health maintenance organization group contract or any self-insured group health benefit program or plan provided: The group contract or the self-insured program or plan is on an expense-incurred basis; and The eligibility does not result from the provisions of these regulations; The date on which the qualified secondary beneficiary becomes entitled to benefits under Title XVIII of the Social Security Act; The date on which a qualified secondary beneficiary who is a dependent child would no longer have been covered under the group contract if there had been no applicable change in status; The date on which the qualified secondary beneficiary becomes insured under a non-group policy or contract or under a non-group health maintenance organization contract which provides coverage for hospital, surgical, medical, or major medical benefits on an expense-incurred basis; The effective date of an election by a qualified secondary beneficiary to no longer be covered under the group contract; or The premium due date on which the qualified secondary beneficiary fails to make timely payment of any amount required under Regulation .06C of this chapter.