Mark, who became disabled on 3/28/92, was entitled to DIB without a waiting period beginning 4/1/92 because of a previous period of DIB entitlement which ended less than 60 months prior to the start of the current disability. The previous period of DIB entitlement consisted of a total of 16 months10/86-1/88. Mark's D-HI entitlement can begin 12/1/92, the 25th month of entitlement to DIB. If the previous period of entitlement had ended 2/28/87 or earlier, however, Mark could not have been entitled to D-HI until 4/1/94 since Mark 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 the disabled parent's record beginning 11/83, the month attained age 18. Since Jane's parent recovered from their disability, the entitlement to disability benefits ended 5/31/86. Both Jane and the parent were entitled to Medicare at the time of termination. On 9/5/93, Jane's parent again became disabled, and both 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, NH must serve a new 24-month D-HI qualifying period and NH 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 since was working. If John 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 over age 50 and the surviving spouse of an insured worker, 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, of D-HI entitlement begins 4/1/01, the 25th month of disability benefit entitlement. If a new period of disability had begun 2/1/02 or later, Mary would have been required to begin a new 24-month D-HI qualifying period since Mary 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; 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.