You still enter the 1099-R it in Federal > Wages and Income > Retirement. The distribution code in Box (is it 4?) will tell the program that it's a death benefit. It may still be taxable, though.
I am in the same situation. I received a small death benefit from my brother's estate. I entered the 1099-R_LS with Distribution Code 7 (Death Benefit), yet Turbo Tax still thinks I retired and is asking me about my "retirement plan" and "annuity". Please help!