IL| Bulletin 2025-21 is a data call from the Illinois Department of Insurance to all insurers writing individual comprehensive major medical coverage in Illinois, requiring submission of detailed enrollment, premium, claims (medical and pharmacy), utilization, and benefit-level data for fully insured individual, small group, large group, and Medicare supplement business to support the state’s annual Health Insurance Coverage, Affordability and Cost Transparency Report, with experience from January 2022 through June 2025 (runout through November 2025), submitted in specified Excel templates by January 23, 2025, via secure file exchange, with data kept confidential except for aggregated, anonymized reporting and with Risk and Regulatory Consulting, LLC assisting in collection.