Health Savings Account Important Health Savings Account (HSA) Information: If you have enrolled in an HSA account, learn how to manage your account, access forms, and even download the Optum app through the links below. IRS links:Eligible Medical Expenses – IRS Publication 502IRS Tax Form 8889 InformationOptum Bank Links: Optum Bank WebsiteOptum HSA User GuideMedical Expense Eligibility ToolAdditional Optum ResourcesHealth Savings Account (HSA) Employee Resources – Open Enrollment 1-2-3