To report a qualified charitable distribution on your Form 1040 tax return, you'll use the 1099-R (even though there's no indication that it was a QCD). Enter the info as a 1099-R and you'll be asked in one of the follow-up questions if it was a Qualified Charitable Distribution.
TurboTax includes the full amount of the distribution reported on your Form 1099-R on line 4a (IRA Distributions) of your Form 1040 or 1040-SR. The taxable amount reported on Line 4b will be the total distribution less the QCD amount and will have "QCD" entered next to it.
Where do I enter a 1099-R? To verify the QCD has been entered,
Preview Form 1040 in TurboTax Online. And use Forms Mode if you are using the desktop software.
What is a Qualified Charitable Donation and how do I enter it in TurboTax (video included).