Where do I find the code for NYC flexible benefit program (IRC125)?

[Martha1]

Sec 125 represents the pretax health insurance costs you paid. The amount has already reduced your W2, Box 1 wages, so you don't deduct it again on your federal return. Adding in Box 14 doesn't go anywhere or do anything.

The only important Box 14 Sec 125/ IRC 125 "dropdown" is if you work for the government of New York City. If you work for NYC, you choose the dropdown "NY IRC 125 Subject to Tax".

Assuming you don't, you can either not list it as all, or choose Other. Same result.