No.
W-2 box 12 code DD : this has no effect on your tax return.
DD—Cost of employer-sponsored health coverage. The amount
reported with Code DD is not taxable.
Code DD in Box 12 is the cost that your employer/and/or you, paid for your Health
Insurance.
It is
informational but it is not included in your tax filing. You can enter it in the W-2 Box 12 drop down menu - it is found after z.
https://www.irs.gov/affordable-care-act/form-w-2-reporting-of-employer-sponsored-health-coverage
