How to determine if a Class Action settlement is taxable

I received a settlement for the Philips CPAP recall for ~$170.  In the comments at the bottom it states:

"We cannot provide individual tax advice regarding this distribution" and state to consult a tax advisor.  That sounds like a bunch of CYA mumbo-jumbo and they should know if it is taxable or not.

How does a person determine the tax-ability of such a payment?  I read in other threads that if it is taxable, to enter it using a Form 1099-INT.

Now, $170 is no big deal, but why pay tax on it if it isn't necessary?  The tax on it sure isn't going to break me, I just don't want to get audited over such a meager amount.

Thanks in advance.