The Department of Central Management Services (CMS) has recently announced that open enrollment for the state of Illinois Total Retiree Advantage Illinois (TRAIL) Medicare plans will be Nov. 1- Nov. 30, 2022. Aetna PPO will be the only insurance carrier offered under the plans effective Jan. 1, 2023.

Members eligible for the state of Illinois TRAIL plans are Medicare-eligible retirees who are enrolled in Medicare Parts A & B. Members who have qualifying dependents are only eligible when all dependents are also eligible and enrolled in Medicare Parts A and B. 

CMS is in the process of mailing letters to affected members.  A copy of the letter can be found here: TRAIL Participant Letter.pdf (

Additional information regarding open enrollment and plan changes can be found at the CMS TRAIL website at

SURS serves as the withholding agent for retiree insurance premiums however we are not the plan administrator and are not involved with contracting decisions or carrier coverage. MyBenefits is the third-party administrator of the state of Illinois retiree insurance programs for CMS. Questions regarding open enrollment and plan coverage should be directed to MyBenefits at (844) 251-1777 or to the plan carrier directly using the contact information provided in the CMS letter.