No annuitant, refund applicant, or other beneficiary may transfer or assign his annuity, refund, or disability benefit or any part thereof by way of mortgage or otherwise, except as provided in Section 11-223.1, and except in the case of refunds, when a participant has pledged by assignment, power of attorney, or otherwise, as security for a loan from a legally operating credit union making loans only to participants in certain public employee pension funds described in the Illinois Pension Code, all or part of any refund which may become payable to him in the event of his separation from service. The board in its discretion may, however, pay to the wife or to the unmarried child under 18 years of age of any annuitant, refund applicant, or disability beneficiary, such an amount out of her husband's annuity refund, or disability benefit as any court may order, or such an amount as the board may consider necessary for the support of his wife or children or both in the event of his disappearance or unexplained absence or of his failure to support such wife or children.
In the event that a person certified by a medical doctor to be under legal disability (i) has no spouse, blood relative, or other person providing or caring for him or her, (ii) has no guardian of his or her estate, and (iii) is confined to a Medicare approved, State certified nursing home or to a publicly owned and operated nursing home, hospital, or mental institution, the Board may pay any benefit due that person to the nursing home, hospital, or mental institution, to be used for the sole benefit of the person under legal disability.
Payment in accordance with this subsection to a person, nursing home, hospital, or mental institution for the benefit of a minor or person under legal disability shall be an absolute discharge of the Fund's liability with respect to the amount so paid. Any person, nursing home, hospital, or mental institution accepting payment under this subsection shall notify the Fund of the death or any other relevant change in the status of the minor or person under legal disability.
40 ILCS 5/11-223