. . . "Thanks, Electronic Tech ET,Full extension - geez I do not know if that would provide any compensation but might get SC would at zero.A C&P exam is a COMPENSATION & Pension examination that a decision maker has to request.If the claimant has probative evidence of something from AD and points out I would like a C&P examination,chances are they will get a C&P exam.SSDI is not effected by VA comp - SSI is" .