@DiagGroupA = qw(2770 27700 27701 27702 27703 27707 27709); @DiagGroupB = qw(277); @UNSPECIFIED = qw(0704 07049); foreach $diagnosis (@DiagGroupA) { $DiagGroupA_list{$diagnosis} = 1; } foreach $diagnosis (@DiagGroupB) { $DiagGroupB_list{$diagnosis} = 1; } foreach $diagnosis (@UNSPECIFIED) { #$DiagUNSPECIFIED_list{$diagnosis} = 1;