Key Takeaways

  • Illinois requires a 30-day free look period for Medicare Supplement policies
  • Illinois provides a 6-month open enrollment period starting at age 65 with Part B
  • Guaranteed issue rights apply when losing other coverage or during open enrollment
  • Illinois prohibits pre-existing condition waiting periods during open enrollment
  • Medicare Supplement plans must be standardized (Plans A through N)
Last updated: January 2026

Illinois Medicare Supplement (Medigap) Regulations

Illinois provides important protections for Medicare beneficiaries purchasing Medicare Supplement (Medigap) insurance.

Free Look Period

Illinois requires a 30-day free look period for Medicare Supplement policies:

  • Policyholder can return for full premium refund
  • Begins when policy is delivered
  • Applies to all Medicare Supplement plans
  • No questions asked, no penalty

Exam Tip: Medicare Supplement has a 30-day free look in Illinois, which is longer than the 10-day free look for standard health insurance.

Open Enrollment Period

Illinois provides a 6-month open enrollment period for Medicare Supplement:

When It Begins

The 6-month period starts:

  • First day of the month you are 65 or older AND
  • Enrolled in Medicare Part B

Protections During Open Enrollment

  • Guaranteed issue - Must be accepted regardless of health
  • No pre-existing condition exclusions
  • Standard rates - Cannot be charged more for health conditions
  • Any plan available - Can choose any Medigap plan A through N

Outside Open Enrollment

If you apply outside the 6-month open enrollment period:

  • Insurers can use medical underwriting
  • May deny coverage based on health
  • May impose pre-existing condition waiting periods
  • May charge higher premiums based on health

Exception: Guaranteed Issue Rights

You have guaranteed issue rights in specific situations even outside open enrollment.

Guaranteed Issue Rights

Beyond open enrollment, Illinois provides guaranteed issue rights in specific situations:

Triggering Events

EventGuaranteed Issue Right
Losing employer coverageCan purchase Medigap within 63 days
Leaving Medicare AdvantageCan purchase Medigap within 63 days
Medicare Advantage plan leaves areaCan purchase Medigap
Medigap insurer becomes insolventCan switch to comparable plan
Losing MedicaidCan purchase Medigap

Trial Right

If you leave Medigap for Medicare Advantage:

  • Have 12 months to decide
  • Can return to previous Medigap plan or comparable plan
  • Guaranteed issue, no health questions
  • Only applies to first 12 months

Standardized Plans

Illinois requires Medigap plans to be standardized:

Available Plans

PlanBenefits
Plan ABasic benefits only
Plan BBasic + Part A deductible
Plan CComprehensive (pre-2020 only)
Plan DSimilar to C, no Part B excess
Plan FMost comprehensive (pre-2020 only)
Plan GLike F without Part B deductible
Plan K50% cost sharing, out-of-pocket max
Plan L75% cost sharing, out-of-pocket max
Plan M50% Part A deductible
Plan NCost sharing, copays for visits

Note: Plans C and F are only available to those eligible for Medicare before January 1, 2020.

Rate Regulation

Illinois allows several rating methods:

  • Attained age rating (premiums increase with age)
  • Issue age rating (premium based on age at purchase)
  • Community rating (same premium regardless of age)
  • Rate increases must be filed with IDOI
Test Your Knowledge

How long is the free look period for Medicare Supplement policies in Illinois?

A
B
C
D
Test Your Knowledge

When does the 6-month Medicare Supplement open enrollment period begin in Illinois?

A
B
C
D