# United States tariff lines under HS 2937.21

> The United States tariff splits HS 2937.21 (steroidal hormones, their derivatives and structural analogues: Cortisone, hydrocortisone, prednisone (dehydrocortisone) and prednisolone (dehydrohydrocortisone)) into 4 national lines: 2937.21.00.10 (cortisone), 2937.21.00.20 (hydrocortisone), 2937.21.00.30 (prednisone) and 2937.21.00.40 (prednisolone). Every United States line under 2937.21 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/293721
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2937.21](https://border.bot/countries/united-states/hs-codes/293721)

## Key facts

- HS subheading: [2937.21](https://border.bot/hs-codes/293721)
- Duty (MFN): Free
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2937.21

The United States tariff splits HS 2937.21 (steroidal hormones, their derivatives and structural analogues: Cortisone, hydrocortisone, prednisone (dehydrocortisone) and prednisolone (dehydrohydrocortisone)) into 4 national lines: 2937.21.00.10 (cortisone), 2937.21.00.20 (hydrocortisone), 2937.21.00.30 (prednisone) and 2937.21.00.40 (prednisolone).

Every United States line under 2937.21 is free of general (MFN) duty.

- [2937.21.00.10](https://border.bot/countries/united-states/hs-codes/2937210010) Steroidal hormones, their derivatives and structural analogues, Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydrocortisone), Cortisone. Duty (MFN): free
- [2937.21.00.20](https://border.bot/countries/united-states/hs-codes/2937210020) Steroidal hormones, their derivatives and structural analogues, Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydrocortisone), Hydrocortisone. Duty (MFN): free
- [2937.21.00.30](https://border.bot/countries/united-states/hs-codes/2937210030) Steroidal hormones, their derivatives and structural analogues, Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydrocortisone), Prednisone. Duty (MFN): free
- [2937.21.00.40](https://border.bot/countries/united-states/hs-codes/2937210040) Steroidal hormones, their derivatives and structural analogues, Cortisone, hydrocortisone, prednisone (dehydrocortisone), and prednisolone (dehydrohydrocortisone), Prednisolone. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2937.21 yet.

- [The Harmonized System text for 2937.21](https://border.bot/hs-codes/293721)

- Previous subheading: [2937.19](https://border.bot/countries/united-states/hs-codes/293719) Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones
- Next subheading: [2937.22](https://border.bot/countries/united-states/hs-codes/293722) Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2937.21?

The United States tariff splits HS 2937.21 (steroidal hormones, their derivatives and structural analogues: Cortisone, hydrocortisone, prednisone (dehydrocortisone) and prednisolone (dehydrohydrocortisone)) into 4 national lines: 2937.21.00.10 (cortisone), 2937.21.00.20 (hydrocortisone), 2937.21.00.30 (prednisone) and 2937.21.00.40 (prednisolone).

### What is the duty on HS 2937.21 in the United States?

Every United States line under 2937.21 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/293721.json