ER Bill Nightmare: Denied for 'Misconduct'?!

Just found out my son's $7,000 ER claim got denied because of 'willful misconduct.' I'm honestly shocked. How do they even decide what's 'willful'? Has anyone else had an insurance claim denied for something like this? I feel lost and could use some advice. #InsuranceWoes #ERBill #NeedAdvice #Health #BodyHealth