Under Deductions & Credits, when you enter the amount that you paid out of pocket, be sure to include the amount paid with distributions from the HSA. TurboTax automatically subtracts the amount reported as distributions from your HSA used for medical expenses and only includes the remainder on Schedule A line 1.
Note that for any qualified medical expenses incurred after the date on which you established your HSA, for expenses paid out of pocket you can reimburse yourself with a distribution from the HSA at any time in the future as long as you do not include on any year's Schedule A line 1 the amount you will be reimbursing yourself with a distribution from the HSA. This can be useful if you do not have sufficient medical expenses to put you well over the 10% (or 7.5%) of AGI threshold.
