However, even though a merchant or some of the items that it sells may appear to fit within a rewards category, the merchant may not have a merchant code in that category.
We group similar merchant codes into categories for purposes of making rewards offers to you. Merchants who accept Visa/Mastercard credit cards are assigned a merchant code, which is determined by the merchant or its processor in accordance with Visa/Mastercard procedures based on the kinds of products and services they primarily sell. Important Information about your Rewards Categories