Unless otherwise designated by the member, eligibility for benefits shall be in the order named, except that a dependent parent shall be eligible only if there is no other dependent beneficiary. Any benefit to be received by or paid to a dependent beneficiary to be determined under this paragraph as provided in Sections 16-141 and 16-142 may be received by or paid to a trust established for such dependent beneficiary if such dependent beneficiary is living at the time such benefit would be received by or paid to such trust.
For purposes of this subsection, "disability" means an inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months.
The changes made to this Section by Public Act 90-448, relating to benefits for certain unmarried children who are full-time students under age 22, apply without regard to whether the deceased member was in service on or after the effective date of that Act. These changes do not authorize the repayment of a refund or a re-election of benefits, and any benefit or increase in benefits resulting from these changes is not payable retroactively for any period before the effective date of that Act.
The change to this Section made by this amendatory Act of the 91st General Assembly applies without regard to whether the deceased member or annuitant was in service on or after the effective date of this amendatory Act.
40 ILCS 5/16-140