This subpart establishes the procedures that OPM will use to—
    
    
        
        (a) 
         Determine that an individual is a missing annuitant;
     
    
        
        (b) 
         Suspend payment of annuity to a missing annuitant;
     
    
        
        (c) 
         Notify individuals affected by such a suspension of payments; and
     
    
        
        (d) 
         Determine that a missing annuitant has died.