The free edition does not support the forms that are required to be filed when there have been contributions made to a Health Savings Account (HSA).
If the employer contribution to your Health Savings Account (HSA) was included on your W-2 in box 12 with a code W, then when you file your return, the IRS will be expecting a corresponding Form 8889 as a part of your return to reconcile the contribution. Not including this may trigger an audit.
Form 8889 includes information about contributions to your HSA as well as information about whether you were eligible to make a contribution to the HSA for the year. There might be tax consequences on your return if all the requirements are not met and reconciled on Form 8889, which is why it is important to allow the correct TurboTax program to determine this.