0406.90.90.00 - Described in additional U.S. note 22 to this chapter and entered pursuant to its provisions

This subheading covers "Other cheeses, and substitutes for cheese, including mixtures of the above." This broad category encompasses a wide array of cheese products that do not fit into more specific subheadings within heading 0406. It includes cheeses that are not specifically identified by type (like Cheddar, Mozzarella, etc.) and also includes manufactured products designed to mimic cheese, such as cheese spreads or imitation cheese. Mixtures of various cheeses also fall under this classification, provided they do not contain the specific types of cheese excluded by further subdivisions.

The distinction between this subheading and its siblings lies in the specific composition and processing of the cheese. While this subheading is a general "catch-all" for other cheeses, other related subheadings might differentiate based on factors such as the presence of certain fats, specific cheese types in mixtures, or processing methods like grating or shredding. It is crucial to examine the exact composition and any accompanying notes to ensure correct classification.

As this is a leaf node, there are no further subcategories under 0406.90.90.00. Classification at this level requires careful consideration of the specific cheese product and its adherence to any relevant additional U.S. notes that may provide further guidance on what constitutes "other" cheeses and substitutes. Examples of products that could potentially fall here include certain types of artisan cheeses without a specific name, or processed cheese products where the primary component is cheese but not a specifically enumerated type.