Customs commodity code is eight-digit commodity code required for exports outside the EU. It needs to be entered on your customs export declaration. Sometimes known as the “first eight digits of the Customs Tariff number” or “CN (Customs nomenclature) code”, it's also used as the basis for the import declaration in the country of destination. Find more information about Customs community codes in Customs Notice 600 on the Customs and Excise website.