MedicaidPrior AuthHigh impact
Illinois Medicaid Patients On Insulin
Illinois Medicaid - HFS·IL · Endocrinology, Family Medicine, Internal Medicine +1 more·Provider Notice
Effective date
Aug 2, 2006
We identified it
Jun 21, 2026
Summary
Illinois Medicaid has updated their preferred drug list for insulin products, making all Humalog and Humulin products preferred while requiring prior authorization for non-preferred Novolin and Novolog products. Existing grandfathered approvals for non-preferred insulins will expire over the next few months with staggered end dates.
Action Required
Immediately: Billing team must update prior authorization requirements for non-preferred insulin products (Novolin and Novolog) for Illinois Medicaid patients. Update billing system to flag these products for prior auth when grandfathering periods expire. Coordinate with clinical staff to encourage switching patients to preferred Humalog or Humulin products when clinically appropriate. Contact Illinois Medicaid at 1-800-252-8942 or fax 217-524-0404/217-524-7264 for prior authorization requests when medically necessary.