1102.90 - Other:

This HTS category, 1102.90, encompasses cereal flours that are not derived from wheat or meslin, and are not specifically classified under other headings within Chapter 11. This "Other" designation applies to a diverse range of cereal flours not explicitly detailed elsewhere, as long as they meet the general definition of flour produced by milling cereals.

Unlike its sibling category, 1102.20.00.00 (Corn (maize) flour), this heading covers flours from cereals such as buckwheat, rice, and rye, among others. The distinguishing factor lies in the specific type of cereal used as the raw material for the milling process. While corn flour is a distinct classification, this 1102.90 category acts as a catch-all for other non-wheat cereal flours.

The subcategories within 1102.90 provide further specificity for commonly encountered cereal flours. These include buckwheat flour (1102.90.20.00), rice flour (1102.90.25.00), and rye flour (1102.90.27.00). The existence of these specific subheadings indicates that the classification is hierarchical, moving from broader categories to more granular distinctions based on the source cereal. If a flour derived from a cereal not listed in the specific subcategories is encountered, it would fall under the residual "Other" classification within 1102.90.