How to fill in SSA 1099 info when you have no SSA 1099

I am a Civil Service retiree but I do receive a small amount of Social Security in the form of payments to Medicare. I do not actually receive any Social Security in direct payments to me. The amount of Social Security I qualify for is almost enough , but not enough to fully cover my Medicare premiums. Medicare bills me for the balance at the end of the year. Social Security does not send me a 1099.

How should I answer the question of whether I receive  a Social Security benefit & fill in the SSA 1099  box questions when I don't have a 1099?