Can phylocode classify viruses?
PhyloCode is not a new system but it isn't popular yet and actually quite opposed by some.
It overlaps with the ranked based systems but does not nullify them, meaning that even if PhyloCode becomas popular the ranked systems will still be needed.
One might understand from your question that virus have no classification system, but they have. The common one is called ICTV.
PhyloCode can classify virus and there is already a classification for virus (ICTV)