Unfortunately, if you had any activity in your HSA (contributions to or distributions from), then the IRS requires that you add form 8889 to your return.
Form 8889 is a part of TurboTax Deluxe and above, so not available for the Free Edition.
Please see this link for a comparison of TurboTax Online products (Click on "Tax Forms") - https://turbotax.intuit.com/personal-taxes/online/deluxe.jsp
