9021.50.00.00 - Pacemakers for stimulating heart muscles, excluding parts and accessories thereof

This HTS category, 9021.50.00.00, specifically covers pacemakers designed for stimulating the heart muscle. These are implantable medical devices that deliver electrical impulses to regulate a patient's heartbeat. The classification excludes any component parts or accessories associated with pacemakers, which would be classified separately.

Unlike sibling categories within 9021, this subheading focuses solely on the primary function of heart muscle stimulation. It is distinct from orthopedic or fracture appliances (9021.10), artificial teeth and dental fittings, and other artificial parts of the body that compensate for different types of disabilities. Furthermore, it is differentiated from hearing aids (9021.40), which address auditory impairments, and the broader "Other" category within 9021 (9021.90) for appliances not otherwise specified. As a leaf node, there are no further subdivisions within this specific classification, meaning that any part or accessory of a pacemaker would fall under a different HTS code.