Sorry, I did mean box 7.
Code 7 means that you chose to treat the traditional IRA as your own. As such, it's no longer an inherited IRA. Tell TurboTax it's not inherited and you should be able to work though everything.
Any basis that your husband had in nondeductible traditional IRA contribution is now part of your basis as well. If your husband had basis, after clicking the Continue button on the page that lists the 1099-Rs that you've entered, indicate that you made and tracked nondeductible contributions, click the EasyGuide button on the Let's Find Your IRA Basis page and indicate that you inherited a traditional IRA before 2020 from a spouse who died even though you inherited it in 2020. TurboTax will then allow you to enter the basis that you inherited from your husband.
