Does TurboTax use my HSA expenditure information as the basis for calculating a possible itemized deduction for medical expenses"

[Fern]

No, HSA expenses are not added by the program to medical expenses. If your medical expenses are paid with HSA money, you cannot include them in the calculation of itemized deductions because you have already received a tax benefit when you made the contribution to the HSA. Contributions to an HSA are not subject to income tax.