When you apply for disability after age 60 but before full retirement age, Social Security applies special age-specific rules when it evaluates your disability.
South Dakota Disability Determination Services (DDS), a state agency in Sioux Falls, decides whether you are medically eligible for Social Security disability.
If you live in North Dakota when you apply for SSDI or SSI, your claim will be sent to a state agency in Bismarck called Disability Determination Services (DDS).