'555549' => [
              '172193',
              '19601',
              '19602',
              '3252',
              '3665',
              '8959',
              '4758',
              '14835',
              '16718'
            ],
'560834' => [
              '172193',
              '19601',
              '19602',
              '3252',
              '3665',
              '8959',
              '4758',
              '14835',
              '16718'
            ],

##</code><code>##

my %result;
while ( my $rec = $data->fetchrow_hashref ) {
    push @{ $result{ $rec->{"ID"} } }, $rec->{"item"};
}