On the TurboTax Form 1099-R entry screen you need to check the box labeled I have more than one value in Box 7 located just below box 7. Enter the code of 7 in the first box and the code of D in the second box.
7D is the combination of 2 codes, 7 and D. You should enter them both.
In TurboTax Online, on the entry screen of form 1099-R, put a checkmark on I have more than one value in Box 7. A second Box 7 will appear and you can enter the two codes, one in each box. The order doesn’t matter; TurboTax'll make sure you get the right results either way.
Code D does not match with non qualified annuity questions for TT. The only work around is to remove Code D but that doesn't seem correct. It looks like another software issue on TT end. Can you confirm?
This is a known issue, that when you enter a distribution code of D that you are asked questions about "other qualified retirement plans" which doesn't apply to nonqualified annuity (code D).
Please see this TurboTax Support article, and sign up to be notified of updates.