https://youtu.be/-wpHszfnJns While very basic and mostly just explaining the termonology of US health insurance lingo, this should be like required viewing.
(And I have started saying "DIRTY. TRICK." as I look up my own insurance benefits. Like finding out that "Max 2,000" on my dental plan doesn't mean my maximum out of pocket but rather the maximum amount the insurance will pay for and anything past that is all on me to pay.)
