Unless some of your additional distribution amount was used for “non-qualified” medical expenses (see this link), then there would be no change to your refund or tax due, and no other reason for further action in this scenario. (The IRS generally doesn’t want an amendment that doesn’t change the bottom line, and will contact you if they want more info or clarification on a discrepancy such as this.)
If, on the other hand, some of the additional distribution amount was not used for qualified expenses, there would likely be a change to your tax result, and a need to file an amended return (1040X). Here’s how to do the amendment in TurboTax — it’s pretty straightforward, but you do have to pay attention(!).
The most important considerations are to first verify that your original return has been processed (by receiving the refund if there is one), and to make sure the program knows you’re amending (the refund/balance-due will show as $0) before you change the 1099-SA. (The 1040X form the program will be generating has columns for the previous and new versions which will be inaccurate otherwise.)
Also, the 1040X should be ready in our program starting February 23rd (that’s the projected date here), so you won’t be able to prepare your federal amendment until then. If you live in a state with income tax, you’ll want to re-do that also, and if they’re providing an availability date for their amendment form, it should be here. Good luck, @lukepjohnson24!