You can enter the pass-through premiums that were contributed to your HSA in the HSA section of TurboTax.
- Go to Federal Taxes->Deductions & Credits->Medical and click on "HSA MSA Contributions".
- Click through the screens until you come to the one entitled "Did your employer tell you about any other contributions?" (see screenshot below)
- Click on "yes" to exposes the bottom three lines
- Enter the amount of the pass-through on the last line (see arrow)
