Amends the Illinois Insurance Code. Provides that a group policy of accident and health insurance or managed care plan that is amended, delivered, issued, or renewed after January 1, 2026, shall provide coverage for clinical genetic testing for an inherited gene mutation for individuals with a personal or family history of cancer as recommended by a health care professional in accordance with current evidence-based clinical practice guidelines. Requires, for individuals with a genetic test that is positive for an inherited mutation associated with an increased risk of cancer, coverage to include any evidence-based screenings, as recommended by a health care professional in accordance with current evidence-based clinical practice guidelines, to the extent that the management recommendation is not already covered by the policy, except that the coverage for the evidence-based screenings may be subject to a deductible, coinsurance, or other cost-sharing limitation.