I used to be a claims examiner at a few carriers.. they are all the same.. they are allowed to deny claims after the late filing deadlines and appeals will be considered at examiner discretion, HOWEVER.. i can tell you that you won't find any examiner who's going to pull purged files for claims that old. It involves a lot of work and time. Many claims back that far will either be purged and on microfilm and even in another location. Since they are so old the examiner will either be REQUIRED to deny them and on appeal they would go to the legal department if the value is substantial, even then they can still deny them. Not to also forget you have to remember that many of these may have also been paid, so your not just asking the carrier to go back that far and pay, but your asking them to manually calculate benefits on duplicate claims that were purged. I think you have about a 1 in 1000 shot in getting them to do this. JMHO