Can I use box 12b that has dd $11388.24. As additional contributions to qualified retirement accounts.

[VolvoGirl]

No.  Only enter it from the W2.  The code DD tells it that it is a retirement contribution.  It comes out of your pay pretax and has already been deducted from the wages in box 1.  And you can't deduct them again.

[DoninGA]

No - 

Box 12 Code DD—Cost of employer-sponsored health coverage. The amount reported with code DD is not taxable.