What if I don't see my plan type?

If you are in the Health Insurance section of the program and have indicated that you have health insurance for the full year, then on the screen where asked if you have any of the Less Common Plans shown, answer NO since you have Medicare.  That will complete the Health Insurance section of the program.

And do you need to claim it for your self employed health ins?

Do you get Social Security benefits with a deduction for Medicare?  Medicare plan B payments are qualified as Self-employed medical insurance premiums and should be entered under Business  instead of in the SSA-1099 Social Security Benefits section.