Glad you're doing better. It can be weird being ill in a foreign country. I broke a leg in Cambogia and had to spend a little time in BKK General.
I'm actually a little surprised BCBS covered you with that pre-existing condition. You should be very careful about what claims you submit. They'll be looking for rescission to deny your claim and you may come out ahead by paying your bill directly and not seeking an insurance claim.
Don't be surprised for a legal fight. After all, they do need to take care of their shareholders before paying claims. They're a for profit company after all.