| 9903.04.60 | Patented pharmaceutical articles and associated ingredients, default treatment | 100% ad valorem. For this heading, the Section 232 duty plus the Column 1 rate equals the 100% headline rate. | Highest recovery priority. Build claim models before the effective date if covered imports may later be exported, destroyed, rejected, or used in manufacturing. |
| 9903.04.61 | Patented articles entered before September 29, 2026 for Secretary-identified Annex III companies | Column 1 rate only during the transitional period. | Track company status carefully. A date or company-status error can move the line into the wrong Chapter 99 treatment. |
| 9903.04.62 | Patented articles that are products of Japan, the European Union, South Korea, Switzerland, or Liechtenstein | 15% ad valorem. For this heading, the Section 232 duty plus the Column 1 rate equals the 15% headline rate. | Lower rate does not make drawback irrelevant at enterprise volume. Preserve duty, quantity, value, origin, and export evidence. |
| 9903.04.63 | Patented articles that are products of the United Kingdom | Column 1 rate plus 10%, with possible future reduction if official U.S.-U.K. deal treatment is implemented. | Treat the possible reduction as a monitoring item, not as an assumed current rate unless an official notice applies. |
| 9903.04.64 | Patented articles imported under a Commerce-approved onshoring plan | Column 1 rate plus 20%, rising to plus 100% on April 2, 2030. | Onshoring status is company-specific. Keep approval, monitoring, and import-line evidence tied to the entry. |
| 9903.04.65 | Onshoring plan plus MFN pharmaceutical pricing agreement | Column 1 rate plus 0% through January 20, 2029. | The rate is time-limited. Build controls around the January 20, 2029 endpoint and any agreement-status changes. |
| 9903.04.66 | Specialty categories such as orphan drugs, nuclear medicines, plasma-derived products, cell and gene therapies, fertility treatments, antibody drug conjugates, CBRN countermeasures, and certain animal health products | Column 1 rate plus 0%. | Do not classify by product label alone. Specialty treatment can depend on agency determinations and product facts. |
| 9903.04.67 | Generic pharmaceutical articles and biosimilars | Column 1 rate only. | Not subject to the pharma Section 232 headings at this time, but the proclamation calls for later review of generics and biosimilars. |
| 9903.04.68 | Dosage-form products with a U.S.-origin active ingredient | Column 1 rate only. | Preserve active ingredient origin and dosage-form evidence. The exclusion is only useful if the evidence survives review. |
| 9903.04.69 | Articles classifiable in listed HTSUS provisions that are not pharmaceutical articles | Column 1 rate only. | The Chapter 29 or Chapter 30 HTS code is not enough by itself. The article must also be a covered pharmaceutical article or associated ingredient. |