Undeliverable HI cards and enrollment packages and those returned to CMS marked “deceased” must be developed for additional considerations. These include:
         
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                     delayed receipt of benefit checks,
                     
                   
                
             
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                     potential survivor"s benefits,
                     
                   
                
             
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                     termination of monthly benefits, and,
                     
                   
                
             
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                     termination of Part A and/or Part B.
                     
                   
                
             
         
         Development timing is critical for Part B enrollment, refusal, and premium payment.