Serious question - how is pre-existing defined?

[duncang]

6. I have had letters from insurance copanies

Asking me a long list of what, when, where. It is primarily used when something like a er treated injury comes up. Trying to find out if it car wreck related or similar. But I have also had others that ask stuff like when did you first have problems with your back? They could pretty much decide on their own prior to ACA. As brought up here even taking a baby aspirin every day could put you in that category.