HI HB598

Prohibits health insurers, mutual benefit societies, and health maintenance organizations from imposing cost-sharing requirements (deductibles, copayments, coinsurance) on breast cancer screenings, supplemental breast examinations, and diagnostic breast examinations

Covers diagnostic breast examinations using mammography, MRI, or ultrasound to evaluate abnormalities detected through screening or other means

Covers supplemental breast examinations using MRI or ultrasound for individuals with personal or family medical history or other factors increasing breast cancer risk

Provides an exception for high deductible health plans to maintain minimum cost-sharing necessary to preserve HSA eligibility under IRS Code Section 223, while still requiring zero cost-sharing for services classified as preventive care

Applies to all health insurance policies, contracts, plans, and agreements issued or renewed on or after January 1, 2026