Code:
$ cat tst2
Date, time, , number 1, number 2, counter...
20130618,912154, ,009912345678,911111111111,10000, , ,abc
20130618,912154, ,009912345678,921111111111,10000, , ,abc
20130618,982148, ,009101373810,034028791952294,8999, , ,gh
$ CountryCode=92
$ awk -F, -vC="$CountryCode" '($4~"^[ 0]*"C)||($5~"^[ 0]*"C)' tst2
20130618,912154, ,009912345678,921111111111,10000, , ,abc
$ CountryCode=91
$ awk -F, -vC="$CountryCode" '($4~"^[ 0]*"C)||($5~"^[ 0]*"C)' tst2
20130618,912154, ,009912345678,911111111111,10000, , ,abc
20130618,982148, ,009101373810,034028791952294,8999, , ,gh
$