For anyone still looking at this thread who has not received a letter from the IRS, maybe I can help.
If you filed your taxes with TurboTax in 2020 (for 2019), and you had insurance with the "health marketplace" In 2019, there are additional forms you must file before the IRS can process your return. These additional forms are 1) form 1095-A , and 2) form 8962. Form 1095-A should have been filled out and mailed to you by the marketplace, and your tax preparer will use that information to fill out form 8962.
Since my tax lady told me a ton of people got hit with this problem this year (TurboTax was not prepared for the change), I hope this information can help someone!!
