# HS code 9020.00: Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters

> HS code 9020.00 covers other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters. It sits in heading 90.20 (other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters) in chapter 90 (optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof). It is the only subheading of heading 90.20, so every good of the heading is classified here. National tariff lines under 9020.00 are live on border.bot for the United States (3 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/902000
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 90](https://border.bot/hs-codes/90) / [90.20](https://border.bot/hs-codes/9020) / [9020.00](https://border.bot/hs-codes/902000)

## Key facts

- HS code: 9020.00
- Covers: Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters
- Heading: [90.20: Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters](https://border.bot/hs-codes/9020)
- Chapter: [90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof](https://border.bot/hs-codes/90)
- Edition: HS2022
- Duty in the United States: [See its 3 lines](https://border.bot/countries/united-states/hs-codes/902000)

## What this code covers

HS code 9020.00 covers other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters.

The legal text of the subheading is “Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters”, in HS2022.

## What it doesn’t cover

It is the only subheading of heading 90.20, so every good of the heading is classified here.

## How it is structured

9020.00 is a six-digit subheading. Its first two digits, 90, are the chapter; the first four, 9020, are heading 90.20; the last two, 00, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof
- Heading 90.20: Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters
- Subheading 9020.00: Other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters

## In other countries

National tariff lines under 9020.00 are live on border.bot for the United States (3 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/902000): 3 lines, used by 1 other country

- Previous subheading: [9019.20](https://border.bot/hs-codes/901920) Ozone therapy, oxygen therapy, aerosol therapy, artificial respiration or other therapeutic respiration apparatus
- Next subheading: [9021.10](https://border.bot/hs-codes/902110) Orthopaedic or fracture appliances

## Frequently asked questions

### What does HS code 9020.00 cover?

HS code 9020.00 covers other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters.

### Which heading and chapter is HS code 9020.00 in?

HS code 9020.00 is in heading 90.20 (other breathing appliances and gas masks, excluding protective masks having neither mechanical parts nor replaceable filters) in chapter 90 (optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof).

### Where are goods of heading 90.20 classified when 9020.00 doesn’t fit?

9020.00 is the only subheading of heading 90.20, so every good of the heading is classified there.

### Which countries’ tariffs list national lines under HS code 9020.00?

National tariff lines under 9020.00 are live on border.bot for the United States (3 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/902000.json