HS (Harmonized Commodity Description and Coding System) codes are product classification codes used by U.S. Customs and all other members of the World Customs Organization (WCO) to classify goods for customs purposes.
HS codes are six digits that can be broken down into three parts: the first two digits identify the chapter in the HS Nomenclature the goods are classified in, the next two digits identify the heading within that chapter, and the last two digits identify the subheading within that chapter.
The U.S. uses HTS codes to classify products imported into the U.S.