The codes V in (Box 12 vs Box 14) refer to different things. Box 14/"V" is for non-taxable health benefits, as I'd described it above. And [per SuperUser 'TomD8', below] Box 12/"V" is for income re "exercise of non-statutory stock options." (Not a public company / no stock options where I work, so I cannot give you a direct quote from W2, myself.)
Not sure if I just answered your question? And, again, I'm clueless re stock-options; haven't ever worked private sector.
But I also thought that if using TurboTax then typically the algorithm is supposed to figure out what you are / aren't able to do, etc.?? (And I've gotten occasionally helpful human assistance from them, too.) Good luck getting it sorted out, if you've not already done so.
