An SSI recipient, with an established onset date of 06/01/1990, becomes entitled to
                  disability insurance benefits (DIB) based on his date first insured of 04/1991.
               
               His wife passed away in 01/1992.
               During an SSI redetermination, he files a DWB application in 01/1993. Based on the
                  adoption of the Title XVI determination, onset for DWB is established as 06/01/1990.
               
               Since he did not file until 01/1993, the DWB MOE is restricted by the date of death
                  to 01/1992 (12 months retroactivity). Before this provision, considering only the
                  DWB entitlement, Medicare would be effective 01/1994, based on a 24-month qualifying
                  period.
               
               Proceed as follows:
               
                  - 
                     
                        1.  
                           From reviewing the CMPH field of the SSR, 06/1990 is the first C01 month with a dollar
                              amount other than zero. The crediting period begins here.
                            
 
 
- 
                     
                        2.  
                           Apply his SSI/SSP credit months beginning 06/1990. 
 
 
- 
                     
                        3.  
                           Considering his DWB entitlement only, the regular Medicare effective date is 01/1994
                              after serving the 24-month qualifying period. However, after crediting SSI/SSP months
                              to the qualifying period, the Medicare effective date becomes:
                            
                              - 
                                 
                                      
                                       06/1990 plus 24 months = 06/1992. 
 
 
 
 
 
- 
                     
                        4.  
                           Record the information on the appropriate MCS screens. 
 
 
NOTE: In this example, note the difference in Medicare effective dates because of the SSI
                  credit months:
               
               
                  - 
                     
                        • 
                           Effective date for Medicare after SSI credit months: 06/1992. 
 
 
- 
                     
                        • 
                           Effective date for Medicare due to DIB: 09/1993. 
 
 
Due to the DWB entitlement, the claimant will be entitled to Medicare fifteen months
                  earlier than he otherwise would have been based solely on his DIB entitlement.