"Never trust HR" is a good policy. I keep my health to myself at work as well. I don't need special treatment or accommodations, and I'm not working in a field where my meds would be a concern.

However you don't need to go into detail. If you want to be completely discreet, ask for another copy of the HR benefits plan, then look through it yourself to see if you have separate mental health services coverage or a counseling hotline.

Once you're talking to any insurers or care providers then HIPAA (assuming you're in the US) takes over and your privacy is assured.

And like someone else said, set up an FSA if you haven't already. It's free money and makes high deductible plans sting less.

But worst comes to worst, you have to pay $800. That's a decent amount of money. But think of it as an investment in yourself. You'll see that $800 back when you feel less stressed about work and find it easier to advance in your career.