NOTE: The relevant period extends from the earliest date based on the application(s) which
results in class membership up to the AOD (including AOD in later onset date allowance
cases or DOF in title XVI cases), covered by any subsequent claim(s) that is denied
for any reason after July 19, 1983, or for a reason other than not severe on or before
July 19, 1983, or EOD in a subsequent allowance (regardless of whether the subsequent
allowance is continuing, ceased or was a closed period), or the present if no subsequent
applications have been filed.