No way! That's illegal. According to the Affordable Care Act, health insurance plans cannot charge you more or deny you coverage just because you have a pre-existing health condition. In fact, they aren't even allowed to ask.
We do not share your pre-existing condition data with your health insurance provider (unless for some reason you explicitly ask us to). We only collect this data to ensure that you have a plan that will provide you with optimal coverage based on the average costs of managing your health condition.