Mark, who became disabled on 3/28/92, was entitled to DIB without a waiting period beginning 4/1/92 because he had a previous period of DIB entitlement which ended less than 60 months prior to the start of his current disability. His previous period of DIB entitlement consisted of a total of 16 months: 10/86-1/88. Mark's D-HI entitlement can begin 12/1/92, his 25th month of entitlement to DIB. If his previous period of entitlement had ended 2/28/87 or earlier, however, he could not have been entitled to D-HI until 4/1/94 since he would not have been entitled to DIB during any of the 60 months prior to the month of current onset.

Jane, who has been disabled since birth, was entitled to CDB benefits on her disabled father's record beginning 11/83, the month she attained age 18. Since Jane's father recovered from his disability, their entitlement to disability benefits ended 5/31/86. Both Jane and her father were entitled to Medicare at the time of termination. On 9/5/93, Jane's father again became disabled, and both he and Jane were reentitled to disability benefits beginning 3/1/94, after the NH met the 5-month DIB waiting period. Since the NH's prior period of entitlement ended before 3/1/88 and more than 60 months elapsed between the prior termination and current onset, he must serve a new 24-month D-HI qualifying period and his D-HI will begin 3/1/96. Jane, however, can be immediately reentitled to Medicare beginning 3/1/94.

John's DIB entitlement ended 9/30/00 because he was working. If he becomes disabled again at any time within 60 months of the 9/30/00 termination, the months in the prior period may be counted in determining when D-HI entitlement may begin, regardless of the relationship between the two impairments. However, if John becomes disabled again after the 60-month period, the previous months of DIB entitlement may only be counted if the current impairment is the same as, or directly related to, the previous impairment. If the two impairments are not directly related, John would have to begin a new 24-month D-HI qualifying period.

Mary was entitled to DIB for the period 4/95-1/97, a total of 22 months. On 8/6/00, Mary again became disabled but no longer met the insured status requirements for DIB. However, since she was over age 50 and the widow of an insured worker, she was entitled to DWB beginning 2/1/01 after serving the 5-month DWB waiting period. Since Mary had been entitled to DIB during the 60-month period preceding the month of current onset, her D-HI entitlement begins 4/1/01, her 25th month of disability benefit entitlement. If her new period of disability had begun 2/1/02 or later, she would have been required to begin a new 24-month D-HI qualifying period since she would not have been entitled to DIB during the 60 months preceding the month of onset.

Mike was entitled to DIB benefits from 1/75 – 3/77. He was entitled to a new period of disability beginning 9/78 and was entitled to D-HI beginning 9/80 after completing a new 24-month qualifying period.