>I can't think of any other area in healthcare where your care is held hostage unless you pay them for some unrelated diagnostics you don't want.

Ha!! Many woman feel this way about birth control! It's held hostage until you get a pap smear. Yearly pap smear, mind you, evidence and recommendations to the contrary be damned. This is despite the fact that cervical cancer screenings have zero to do with safety of birth control.

Just to be clear, cervical cancer screenings are very good! Especially so when done at evidence based intervals. But birth control can be safely prescribed without it, yet many health care providers require a pap test before they prescribe birth control.