The National Institute of Governmental Purchasing (NIGP) commodity code is a coding taxonomy used primarily to classify products and services procured by state and local governments in North America are a universal taxonomy for identifying commodities and services in procurement systems. It is available as a 3-digit class code, a 5-digit class-item code, a 7-digit class-item-group code, and a detailed 11-digit code. Vendors can register for the commodity codes that best fit the goods or services they provide. Customers can search and procure for goods or services by looking up specific commodity codes.