Amends the Department of Insurance Law. Provides that beginning before or on May 1, 2026, and each May 1 thereafter, the Department of Insurance shall report to the Governor and the General Assembly on health insurance coverage, affordability, and cost trends. Amends the Illinois Insurance Code. Provides that any forms and rates filed for large employer group accident and health insurance shall be automatically deemed approved after 90 days after filing. Provides that beginning plan year 2026, rate increases for all individual and small group accident and health insurance policies must be filed with the Department for approval. Provides that unreasonable rate increases or inadequate rates shall be modified or disapproved. Provides that beginning plan year 2025, the Department shall post all insurers’ rate filings and summaries on the Department’s website. Provides that the Department shall open a 30-day public comment period on the date that a rate filing is posted on the website. Provides that after the close of the public comment period, the Department shall issue a decision to approve, disapprove, or modify a rate filing within 60 days, and post the decision on the Department’s website. Provides that the Department shall adopt rules implementing specified procedures. Defines terms. Makes conforming changes in the Health Maintenance Organization Act and the Limited Health Service Organization Act.