Authorized FO or PC personnel must also sign all special determinations including
proof of support determinations. If you use the report of contact (RPOC) screen for
a special determination, the PIN serves as a signature.
An authorized signature in the APPROVED block of the paper SSA-553 special determination
form or other special determination form is acceptable even if you entered in the
The above guidelines also apply to the SSA-892 used for adjudicating end-stage renal
disease (ESRD) Medicare claims (see HI 00801.308B).