If these disability payments are for your disability (not as a spouse or ex-spouse of a disabled person) then the payments in general are not a function of age.
To initially qualify for benefits, there is an age element. When you reach full retirement age, your benefits will be called retirement benefits instead of disability benefits, but the benefit amount will not change.
There is no time limit on disability benefits, although your case will be reviewed to ensure you are still disabled. If you are still receiving disability benefits when you reach full retirement age, they will automatically be converted to retirement benefits.
A final element involving age is that certain members of your family may qualify for benefits based on your work. They include your spouse (or ex-spouse in some cases), if he or she is 62 or older.
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