W2 uncommon situations screen there is no box for Non taxable Medicaid Waiver payments reported to check as it states in instructions.

If you entered II in box 12 while entering the W2, there will not be a box to check in Uncommon Situations.  If you leave the box 12 blank, the Medicare Waiver option will appear in the list.  Enter the code in Box 12 does the same thing as checking the box on the Uncommon Situations screen.

If there are no amounts on the w-2 and you do not wish to include the income for Earned Income or Additional Child Tax credit purposes, you do not have to enter the W-2 at all.   Just keep it with your tax records.   See the last note at the bottom of this TurboTax FAQ.