80 Ill. Adm. Code 2106.320
Participation Limits
Section 2106.320 Participation Limits
Opt out incentive participation shall cease when the non-Medicare
annuitant:
a) reaches
age 65, unless written proof of Medicare ineligibility is submitted to CMS;
b) becomes Medicare
eligible for any reason; or
c) elects to participate in
the Health Plan.