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SSA logo: link to Social Security Online home 512. How is "disability" defined for establishing a period of disability?

There are two definitions of disability for the purpose of establishing a period of disability:

  1. The basic definition used for disabled worker's benefits (see §507.1); or

  2. "Blindness", as defined in §507.5.

(See Chapter 6 for a further explanation of how disability is evaluated.)

Last Revised: March, 2001

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Last reviewed or modified Friday Sep 19, 2008

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