| DIB | 
                  
                     
                     |  |  |  | 
                  
                     
                     | DIB—Not Disabled—General | 510 | None | 
                  
                     
                     | DIB—Not Disabled—Earnings Test Has Expired or Will Expire In or Before the Quarter
                        Following the Date the Letter is Prepared | 511 | 2 | 
                  
                     
                     | DIB—Not Disabled When Earnings Test Last Met—AOD Before Age 24 | 512 | 1 | 
                  
                     
                     | DIB—Not Disabled When Earnings Test Last Met—AOD Between Ages 24-31 | 512.1 | 1 | 
                  
                     
                     | DIB—Not Disabled When Earnings Test Last Met—AOD At or After Age 31—(Disability Not
                        Due to Statutory Blindness) | 512.2 | None | 
                  
                     
                     | DIB—Explanation of Disability Requirement | 520 | None | 
                  
                     
                     | DIB—Explanation of Disability Requirement—Earnings Test Not Expired | 520.1 | 1 | 
                  
                     
                     | DIB—Explanation of Disability Requirement—Earnings Test Expired—AOD Before Age 24 | 520.2 | 1 | 
                  
                     
                     | DIB—Explanation of Disability Requirement—Earnings Test Expired—AOD Between Ages 24-31 | 520.3 | 1 | 
                  
                     
                     | DIB—Explanation of Disability Requirement—Earnings Test Expired—AQD At or After Age
                        31—(Disability Not Due to Statutory Blindness) | 520.4 | 1 | 
                  
                     
                     | DIB—Disabled in Quarter Alleged or Onset Established Later Than Alleged—Earnings Requirement
                        Not Met—EOD Before Age 24 | 521.3 |  | 
                  
                     
                     | DIB—Disabled in Quarter Alleged or Onset Established Later Than Alleged—Earnings Requirement
                        Not Met—EOD Between Ages 24-31 | 521A | 3 | 
                  
                     
                     | Disabled in Quarter Alleged or Onset Established Established Later Than Alleged—Earnings
                        Requirement Not Met—EOD At or After Age 31—(Disability Not Due to Statutory Blindness) | 521B | 4 | 
                  
                     
                     | DIB—Not Disabled in AOD or At Any Time Thereafter Up to and Including Last Quarter
                        in Which Earnings Requirement Met—AOD Before Age 24 | 521.1.2 |  | 
                  
                     
                     | DIB—Not Disabled in AOD or At Any Time Thereafter Up to and Including Last Quarter
                        in Which Earnings Requirement Met—AOD Between Ages 24-31 | 521.11 | 2 | 
                  
                     
                     | DIB—Not Disabled in AOD or At Any Time Thereafter Up to and Including Last Quarter
                        in Which Earnings Requirement Met—AOD At or After Age 31—(Disability Not Due to Statutory
                        Blindness) | 521.12 | 2 | 
                  
                     
                     | DIB—Not Disabled at Any Time Earnings Requirement Met—AOD Before Age 24 | 521.20 | 1 | 
                  
                     
                     | DIB—Not Disabled at Any Time Earnings Requirement Met—AOD Between Ages 24-31 | 521.21 | 1 | 
                  
                     
                     | DIB—Not Disabled at Any Time Earnings Requirement Met—AOD At or After Age 31—(Disability
                        Not Due to Statutory Blindness) | 521.22 | 1 | 
                  
                     
                     | Statutory Blindness—Not Disabled At Any Time Earnings Requirement Met—AOD 1973 or
                        Later | 521.23 | 1 | 
                  
                     
                     | Statutory Blindness (1972 Amendments)—Not Insured at AOD-AOD 1973 or Later | 521.24 | 3 | 
                  
                     
                     | CDB | 
                  
                     
                     | Statutory Blindness—Not Disabled When Earnings Requirement Test Last Met-AOD Before
                        1973 | 521.25 | 2 | 
                  
                     
                     | CDB—Explanation of Disability Requirement | 522 | None | 
                  
                     
                     | CDB—Disability Must Start Before Age 22 | 522.1 | None | 
                  
                     
                     | CDB—Explanation of Claimant's Rights After Cessation | 522.2 |  | 
                  
                     
                     | CDB—7-Year Period for Reentitlement Ended Before EOD | 522.3 | 2 | 
                  
                     
                     | CDB—Not Disabled At AOD or At Any Time Within 7-Year Period After End of Prior Entitlement | 522.4 | 2 | 
                  
                     
                     | CDB—Reentitlement—Not Disabled At Any Time Before 7-Year Period Ended | 522.5 | 1 | 
                  
                     
                     | CDB—Reentitlement—Disability More Than 7 Years After Prior Period Ended Cannot Serve
                        to Qualify | 522.6 | None | 
                  
                     
                     | DWB | 
                  
                     
                     | CDB—Reentitlement—Advice Regarding Worsening of Condition | 522.7 | 1 | 
                  
                     
                     | DWB—Explanation of Disability Requirement (Widow) | 572 | None | 
                  
                     
                     | DWB—Explanation of Disability Requirement (Widower) | 572.1 | None | 
                  
                     
                     | DWB—Explanation of Disability Requirement (Surviving Divorced Wife) | 572.2 | None |