I can't see it in the EPC either mate which makes me think it may come as part of the headlamp..
Best bet is to order the rod that it attaches too (it might come with that) and order the impossible to see standard part in the diagram too - it could just be a screw but for £1 it's worth risking.
81195-10040 is the rod and 90179-06070 is the mystery standard part.
Just came back from toyota after trying to order the plastic clips that connect to the headlight adjuster but both came back wrong, does anybody know where i can get these from???