WA HB2242

Authorizes the Washington Department of Health to issue immunization recommendations and guidance, considering CDC Advisory Committee on Immunization Practices recommendations and other expert sources, with such guidance exempt from formal rule-making requirements

Requires nongrandfathered health plans issued on or after April 1, 2026 to cover preventive services based on U.S. Preventive Services Task Force recommendations (A/B ratings) and Health Resources and Services Administration guidelines in effect on June 30, 2025, plus immunizations recommended by the state Department of Health

Prohibits cost-sharing for covered preventive services from in-network providers, with an exception allowing health savings account-qualified plans to impose minimum cost-sharing necessary to preserve HSA tax benefits

Grants the Insurance Commissioner authority to adopt rules modifying preventive service coverage requirements, which must be as or more favorable to enrollees than guidelines in effect on June 30, 2025

Amends Washington Vaccine Association statutes to base vaccine definitions and purchasing on state Department of Health recommendations rather than federal CDC recommendations, while prioritizing federal discount rates for vaccine purchases