If you’re like most people, you pay no attention to your health coverage. So when your insurer messes up, which they frequently do, you don’t know it. For example, many policies have a deductible of $200 per person, $400 per family. But are you keeping track of when you reach those magic numbers? Don’t assume your insurance company is. Read and understand your policies and keep your own tally: you may need it for tax purposes anyway.