Prosthetic limbs, orthopedic implants, intraocular lenses, and other appliances worn, carried, or implanted in the body — along with their parts and accessories — fall under this residual heading when not more specifically classified elsewhere in Chapter 90. Ireland and Mexico are leading US import sources, with Malaysia and Costa Rica also significant, reflecting both high-value implant manufacturing in Ireland and assembly operations in the Americas. The US schedule subdivides this heading into four 10-digit lines: general appliances and parts (9021900002), hearing aid parts and accessories (9021904040), pacemaker parts (9021904080), and a further residual for other worn, carried, or implanted appliances and parts (9021908100). As FDA-regulated medical devices, most articles here require device registration and may be subject to premarket review depending on device class.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.