Section 24-5.04 - Cancellation Due to Failure to Enroll or Failure to Maintain Enrollment in Medicare; Effective Date of Cancellation(a) If a retired employee-beneficiary is eligible to enroll and fails to enroll or ceases to be enrolled in the federal Medicare Part B medical insurance plan, the retired employee-beneficiary's enrollment in the medical and prescription drug plans offered or sponsored by the Fund and the medical and prescription drug plan coverages for dependent-beneficiaries under that enrollment shall be cancelled.(b) If a dependent-beneficiary of a retired employee-beneficiary is eligible to enroll and fails to enroll or ceases to be enrolled in the federal Medicare Part B medical insurance plan, the dependent-beneficiary's enrollment in the medical and prescription drug plans offered or sponsored by the Fund shall be cancelled.(c) If a retired employee-beneficiary and/or dependent-beneficiary fails to enroll in the Fund's Medicare prescription drug plan their enrollment in the prescription drug plans offered or sponsored by the Fund shall be cancelled. Retired employee-beneficiaries and/or their dependent-beneficiaries living outside of the Fund's Medicare prescription drug plan's service area are exempt from this Rule.(d) The effective date of any cancellation under this rule shall be the date upon which the retired employee-beneficiary or their dependent-beneficiary, as applicable, first became eligible to enroll or ceased to be enrolled in the federal Medicare Part B medical insurance plan. The retired employee-beneficiary or their dependent-beneficiary shall be responsible for paying all claims incurred from the date the retired employee-beneficiary or their dependent-beneficiary became eligible to enroll, but did not enroll.