Additional Medicare taxes and totalization agreements

Hiya!

Okay, hopefully a little less run of the mill.

I work in a non-US country, have US citizenship. Blah blah blah, foreign income tax credit, all the easy stuff, skipping to the question.

Self employment is managed by a totalization agreement, AKA I'm paying taxes in the country I live in that handles it, I don't need to pay SE taxes as a result.

However, does this also apply to the additional 0.9% on medicare tax? https://www.irs.gov/taxtopics/tc560 I do pay the equivalent over where I live, and it's greater than the amount of tax I would pay. Not sure which way it goes. I'm pretty sure it's not included

Cheers!

Selkie