CN code

Combined Nomenclature code — the EU's 8-digit classification for traded goods, used in customs declarations and in CBAM scope.

CN codes are the EU extension of the 6-digit Harmonised System (HS) code to 8 digits. CBAM scope is defined at the CN heading (4-digit) or subheading (8-digit) level in Annex I of the regulation. The customs declaration for a given shipment uses the 8-digit code.