An Industry Segment is a grouping of similar types of businesses or suppliers under a single heading, such as "Office Supplies/Stationary", "Automotive Supplies", or "Travel Services".

An Industry Segment may be an umbrella for several Merchant Category Codes (MCCs). For example, the Industry Segment called "Office Supplies/Stationary" contains three MCCs:

MCC	MCC Title	Industry Segment
5111	Office Supplies	Office Supplies/Stationary
5943	Stationary Stores	Office Supplies/Stationary
5947	Gift, Card, Novelty Stores	Office Supplies/Stationary