Can any explain to me how to correct the fact that my $7,200 HSA contribution (code W on Box 12 of my W2) is not being carried as a deduction to 1040 Schedule 1?

[RaifH]

You are not getting the deduction on your tax return because you have already received the deduction. Contributions to an HSA through your employer reduces your taxable income on your W-2. It reduces Boxes 1, 3, and 5 of your W-2 so you are already paying less federal income tax, social security tax, and Medicare tax. 

You only receive the deduction on Form 1040 if you contribute out-of-pocket to your HSA. That is not as effective as contributing through your employer since it does not change your social security or Medicare taxes. 

[RaifH]

You are not getting the deduction on your tax return because you have already received the deduction. Contributions to an HSA through your employer reduces your taxable income on your W-2. It reduces Boxes 1, 3, and 5 of your W-2 so you are already paying less federal income tax, social security tax, and Medicare tax. 

You only receive the deduction on Form 1040 if you contribute out-of-pocket to your HSA. That is not as effective as contributing through your employer since it does not change your social security or Medicare taxes.