Box 7 - Distribution code The pull down only allows for a number OR a letter. What do I enter if I have code 4G?

Assuming you are referring to a Form 1099-R:

 

If you have two codes in Box 7 of your Form 1099-R, you can enter both of them in TurboTax.

 

Check the box, "I have more than one value in Box 7" that appears under the Box 7 entry field for Form 1099-R. A second entry field will then appear where you can enter the second code.

 

See these IRS instructions for a detailed explanation of the codes in Box 7.

i.e........ the 4G is really just 

a "4"

and a "G"

for separate boxes