The Internal Revenue Service (IRS) has issued new guidance, Notice 2023-37, which states that for plan years ending after December 31, 2024, HSA-compatible high-deductible health plans (HDHPs) will no longer be permitted to cover COVID-19 testing and treatment before the minimum deductible is satisfied. This guidance answers the question of how long these exceptions to the usual HDHP rules would remain in effect now that the emergency declarations for COVID-19 have ended.