Assembly Bill 1218 aims to prevent surprise medical billing for emergency medical services and related items under health insurance policies in Wisconsin. The bill mandates that defined network plans, preferred provider plans, and self-insured governmental plans must cover emergency medical services without requiring prior authorization, regardless of whether the provider is in-network. If services are provided by a nonparticipating provider, the plans cannot impose more restrictive limitations or higher cost-sharing than they would for in-network services. Additionally, any cost-sharing payments made by the enrollee for emergency services must count towards their in-network deductible or out-of-pocket maximum.

The bill also outlines specific requirements for coverage of items or services provided by nonparticipating providers in participating facilities, ensuring that cost-sharing is not greater than what would be required for in-network services. Providers must notify enrollees about their nonparticipating status and obtain consent before billing them for amounts exceeding the calculated cost-sharing. The bill establishes a framework for open negotiations between providers and plans regarding payment amounts and allows for an independent dispute resolution process if negotiations fail. Overall, the legislation seeks to enhance transparency and protect consumers from unexpected medical costs associated with emergency care.