You should go back to your
W-2 and verify your entries.
The amount contributed to a Health Savings Account (HSA) should
have no bearing on your maximum 401k contributions.
Amounts reported in box 12 (any lines of box 12) with code D indicate 401k contributions. Amounts reported in box 12 with code W indicate HSA contributions. Be sure that your entries match your actual W-2
and that code D was not entered for more than one line of box 12.
