Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 90 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof 90 21 Orthopaedic appliances; splints, etc; artificial parts of the body, etc 90 21 39 Other artificial parts of the body (excl. artificial joints) Commodity Code Description 90 21 39 00 Other artificial parts of the body (excl. artificial joints)