40 ILCS 5/15-103.2
"Portable benefit package": The defined benefit retirement program maintained under the System which includes retirement annuities payable directly from the System as provided in Sections 15-135 through 15-139 (specifically including Section 15-136.4), disability retirement annuities payable under Section 15-153.2, death benefits payable directly from the System as provided in Sections 15-141 through 15-144, and contribution refunds as provided in Section 15-154. The portable benefit package also includes disability benefits as provided in Sections 15-150 through 15-153.3. The portable benefit package does not include the survivors insurance benefits payable directly from the System as provided in Sections 15-145 through 15-149.
40 ILCS 5/15-103.2