If an item has a 4-digit category code of "ZZZZ," what does this indicate?

When an item has a 4-digit category code of "ZZZZ," it signifies that the item falls under the classification of requiring selective handling or has special instructions associated with it. This code is typically used to indicate that there are specific conditions that must be observed when dealing with the item, which can include unique packaging requirements, handling procedures, or storage considerations that deviate from standard protocols.

The presence of the "ZZZZ" code alerts personnel involved in the preservation and packing process to pay closer attention to the item’s specifications and instructions, ensuring that those unique requirements are addressed appropriately. This may involve consulting additional documentation or guidelines provided for the item to ensure it is preserved and packed according to the necessary precautions.