It depends. @Critter is correct.
Box 12 Code D: Elective deferrals under a section 401(k) cash or deferred arrangement plan (including a SIMPLE 401(k) arrangement). See W-2 W-3 Instructions page 19
These amounts are tax deferred and should not be included in Box 1 wages. This is a retirement amount and not related to anything medical.
Box 14: EE HSA: This amount is more commonly reported in Box 12 using Code W when the employer contributes a portion to the HSA.
If you contributed after tax dollars, then you would have a deduction and report it separately..
If the HSA contribution was from your paycheck before tax dollars, then you do not report the employee contribution separately.
Click the link for more details: Where do I enter my HSA contribution?
@DonGr
