Pharmaceutical nomenclature
Specific classification system in HS Chapter 30 for pharmaceutical products, with particular classification rules.
Pharmaceutical nomenclature in the Harmonized System follows specific rules distinguishing it from ordinary chemical product classification. Chapter 30 (pharmaceutical products) and Chapter 29 (organic chemicals) interact in complex ways to determine the classification of medicines and active substances.
Classification depends primarily on dosage and presentation: products presented as measured doses or packaged for retail sale are classified in Chapter 30, while active principles in pure form are classified by their chemical nature in Chapter 29. The WCO INN List (International Nonproprietary Names) identifies substances classified under subheading 2934.99 rather than their natural chemical heading.
Biological products (vaccines, sera, toxins) are classified under heading 30.02, with distinctions between products for human and veterinary use. Diagnostic reagents and test kits occupy heading 38.22 (in Chapter 38), creating sometimes delicate classification boundaries.
Pharmaceutical classification has major economic stakes because medicines often benefit from zero or reduced customs duties under the WTO Pharmaceutical Agreement. Correct classification therefore determines not only duties but also eligibility for sectoral exemptions.