Illinois Administrative Code
Title 80 - PUBLIC OFFICIALS AND EMPLOYEES
Part 1650 - THE ADMINISTRATION AND OPERATION OF THE TEACHERS' RETIREMENT SYSTEM
Subpart C - FILING OF CLAIMS
Section 1650.211 - Disability Recipient Eligible to Receive an Age or Disability Retirement Annuity

a) A member may file an application to transfer from a nonoccupational or occupational disability benefit to an age retirement annuity or a disability retirement annuity prior to the expiration of the eligibility period for nonoccupational or occupational disability benefits. The effective date of the annuity shall be the first of the month following receipt of the application. An annuitant receiving a disability retirement annuity may, any time after becoming eligible for age retirement, file an application to transfer to an age retirement annuity. The effective date of the age retirement annuity shall be the first day of the month following receipt of the application.

b) At the time a disability retirement annuitant becomes eligible to receive an age retirement annuity, the disability retirement annuitant shall provide the System written certification by two state licensed and practicing physicians verifying that the member remains disabled and is unable to perform the duties of the position he or she held at the time the annuitant's disability commenced. The certifications shall be accompanied by a medical report fully explaining the basis for the physicians' conclusion that the member remains disabled. If the disability retirement annuitant is found to no longer be disabled, he or she shall be placed upon age retirement and receive an age retirement annuity.