I didn't add any money to the HSA. I have an end of year Optum Bank statement, but doesn't have the info.
If you withdrew money from your HSA during the year, it is best that you wait until you receive Form 1099-SA before filing your taxes.
Form 1099-SA reports any distributions you had from your HSA account during the year. You will report these distributions on Form 8889. As long as those distributions were used for qualified medical expenses, they will be non-taxable.
Basically, filing Form 8889 lets the IRS know that the HSA Distributions were a non-taxable event. If you do not file Form 8889, the IRS will deem all of the HSA Distributions as non-qualified and will add them to your Taxable Income.
Check out the TurboTax FAQ below for more information about the taxability of HSA distributions: