Senate Bill 251 aims to enhance health insurance coverage for individuals with asthma by mandating that health insurance policies and plans cover prescription drugs and related medical supplies necessary for asthma treatment. The bill specifies that related medical supplies include asthma inhalers and other items essential for administering prescribed medications. It establishes a cost-sharing cap, limiting enrollee expenses to no more than $25 for a one-month supply of each asthma medication and $50 per month for all related medical supplies. Additionally, the bill stipulates that these costs cannot increase based on the number of conditions treated and that the coverage will not be subject to any deductibles.

The bill also includes provisions to ensure that if the cost-sharing limitations would affect eligibility for health savings accounts under federal law, the limitations would only apply after the enrollee meets the minimum deductible requirements. The legislation is designed to take effect four months after publication, with specific applicability rules for policies inconsistent with the act, particularly those affected by collective bargaining agreements. Overall, this bill seeks to improve access to necessary asthma treatments while minimizing financial burdens on patients.