HS code for pulse oximeter
The U.S. HS code for a pulse oximeter is usually 9018.19.95.50 (fingertip), with no general duty and an estimated total of 12.5% from China and 12.5% from Vietnam once additional duties are added.
Estimates use tariff data as of October 22, 2026. The China and Vietnam estimates include Section 301: Forced labor action (12.5%). From China, Section 301: China list duty (7.5% or 25%) may also apply, up to 37.5% in total. Classifications and duty estimates are guidance based on the published HTSUS. The importer of record is responsible for the final classification.
Codes by variant
| Variant | HTS code | General duty | Est. from China |
|---|---|---|---|
| Fingertip | 9018.19.95.50 | Free | 12.5% |
- 9018.19.95.50: Other apparatus
What decides the code
A pulse oximeter is electro-diagnostic apparatus for checking a physiological parameter, classified under heading 9018, with the fingertip unit in 9018.19.95.50.
- The device measures blood oxygen saturation, a physiological parameter, so it falls in heading 9018 as electro-diagnostic apparatus.
- It is a complete apparatus, not a part or accessory, so it takes the finished-goods subheading 9018.19.95.50 rather than a parts line.
- A fingertip unit is self-contained and portable, which keeps it in the other apparatus lines under 9018.19.95.
Common mistakes
- Classifying a pulse oximeter under 9027 as a measuring or analyzing instrument is wrong because heading 9018 covers electro-diagnostic apparatus for checking physiological parameters.
- Putting the unit in 9018.90 as a part or accessory is wrong because a complete fingertip oximeter is a finished apparatus, not a component.
- Treating it as a general electrical device under 8543 is wrong because heading 9018 specifically covers this medical electro-diagnostic use.
Estimated U.S. duty by origin
- China
- 12.5% = Free general + 12.5% Section 301: Forced labor actionMay also apply: Section 301: China list duty (7.5% or 25%). Up to 37.5%.
- Vietnam
- 12.5% = Free general + 12.5% Section 301: Forced labor action
For HTS 9018.19.95.50, as a share of customs value, before fees. Check every measure for your entry with the tariff checker.
EU code and duty
- Fingertip
- CN 9018 19 90, Free
EU Combined Nomenclature 2026, third-country (erga omnes) duty. Preferential rates and EU trade remedy duties are not included.
Frequently asked questions
What is the HS code for a pulse oximeter?
The U.S. HTS code for a pulse oximeter is usually 9018.19.95.50 (fingertip). The first six digits, 9018.19, are the international HS code.
What is the U.S. import duty on a pulse oximeter from China?
The U.S. general duty on HTS 9018.19.95.50 is Free. With the additional duties that apply to goods of China (Section 301: Forced labor action (12.5%)), the estimated total is 12.5% of customs value. Section 301: China list duty (7.5% or 25%) may also apply depending on the exact product. From Vietnam the estimate is 12.5%. Tariff data as of October 22, 2026.
Tariff schedule pages
Related products
Codes checked against the USITC Harmonized Tariff Schedule retrieved October 22, 2026. Additional duties reviewed October 22, 2026. This is an estimate: the importer of record is responsible for classification.