If the claim had been processed under deferred development, obtain an SSA-8000-BK
(Application for SSI). Exception: If a claim in N18 denial status (Failure to Cooperate) is being reversed solely
due to the submission of signed SSA-827’s, deferred development may be continued unless
a nondisability issue not previously addressed could preclude eligibility. For a reopening
that can be processed on MSSICS, choose DENIED CLAIM REOPENING from the SSI Menu (MSSI)
and complete the full path. (See SI 00603.004C. for further instructions for processing the switch from deferred to simultaneous
development.)