The form 8962,
Premium Tax Credit (PTC), will be generated by TurboTax when you enter your
information from your 1095-A form from the health insurance Marketplace. All
you need to do is enter you 1095-A.
See the TurboTax FAQ
below for instructions on what to do about the letter from the
IRS.
https://ttlc.intuit.com/replies/5824742