Other Special Classification Provisions

Yes. Chapter 99 provisions are supplemental — importers must report both the standard commodity classification from Chapters 1–97 and the applicable Chapter 99 subheading. The Chapter 99 code modifies the duty rate or treatment; it does not stand alone as a complete classification.

Chapter 99 is the vehicle for a wide range of special measures, including Section 301 tariffs on goods of Chinese origin, Section 232 tariffs on steel and aluminum, safeguard tariffs, temporary duty suspensions under Miscellaneous Tariff Bills, and certain quota or TRQ provisions. Because these measures are added and modified frequently, importers should verify current applicability through the USITC HTS and CBP guidance before each shipment.