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HTS Code · Chapter 90 · Updated Oct 26, 2026

9018.19.40.00Apparatus for functional exploratory examination

Also written 9018194000 and 9018.19.4000

HTS Code 9018.19.40.00 covers any article best defined as Optical, Photographic, Cinematographic, Measuring, Checking, Precision, Medical or Surgical Instruments and Apparatus; Clocks and Watches; Musical Instruments; Parts and Accessories ThereofOptical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereofInstruments and appliances used in medical, surgical, dental or veterinary sciences, including scintigraphic apparatus, other electro-medical apparatus and sight-testing instruments; parts and accessories thereof:Electro-diagnostic apparatus (including apparatus for functional exploratory examination or for checking physiological parameters); parts and accessories thereof:Other:Apparatus for functional exploratory examination, and parts and accessories thereof in the Harmonized Tariff Schedule.

As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).

From China, the total duty on 9018.19.40.00 last changed on Jul 24, 2026, from 35% to 37.5%. It has changed 2 times since Nov 17, 2025.

Estimated Duty on 9018.19.40.00

$10,000.00 by ocean, entered Oct 26, 2026

China
Total duty
37.5%
$3,750.00 on this shipment
Fees
0.47%
MPF + HMF · $47.14
Duty + fees
37.97%
Payable to CBP
Landed cost
$13,797.14
On $10,000.00 customs value
  • Section 301 – China25%
  • Section 301 – Forced Labor12.5%
  • Customs fees0.47%

Chapter 99 lines9903.88.01Section 301 China: List 19903.05.31Section 301 Forced Labor – China

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Base Duty Rates for 9018.19.40.00

From the Harmonized Tariff Schedule

General Rate of Duty
Free
Special Rate of Duty
—
Column 2 (Non-NTR)
55%
Units of Quantity
No.
Total duty by countryAll 20 →
  • China37.5%
  • Mexico10%
  • Canada10%
  • Vietnam12.5%
  • Germany10%

Tariff updates

Recent US tariff actions that name 9018.19.40.00 or its heading.

All tariff updates
Tariffs by country · Oct 26, 2026

US Import Duty on HTS 9018.19.40.00 by Country of Origin

As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%). Of the 20 largest sources of US imports, the lowest total is 0%, from United Kingdom.

Total duty from China
37.5%
Base rate plus 2 additional tariffs
Lowest total duty
0%
From United Kingdom
Countries with additional tariffs
19 of 20
Section 232, 301 and other Chapter 99 duties
Country of originBase rateAdditional tariffsTotal duty
ChinaFree37.5%
MexicoFree10%0% with USMCA
CanadaFree10%0% with USMCA
VietnamFree12.5%
GermanyFree10%
JapanFree12.5%
South KoreaFree12.5%
TaiwanFree10%
IndiaFree10%
IrelandFree10%
ItalyFree10%
SwitzerlandFree12.5%
ThailandFree12.5%
MalaysiaFree10%
United KingdomFreeNone0%
FranceFree10%
IndonesiaFree10%
BrazilFree37.5%
BangladeshFree10%
CambodiaFree10%
Duty from each country, in words
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Mexico pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Canada pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Vietnam pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Germany pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Japan pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from South Korea pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Taiwan pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from India pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Ireland pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Italy pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Switzerland pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Thailand pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Malaysia pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from United Kingdom pay a duty-free base rate, with no additional tariffs.
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from France pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Indonesia pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Brazil pay 37.5% in duties: a duty-free base rate plus Section 301 – Brazil (25%) and Section 301 – Forced Labor (12.5%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Bangladesh pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).
  • As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Cambodia pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%).

Duties on goods entered Oct 26, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties (AD/CVD); with a free account, the calculator checks the AD/CVD cases that may cover your import. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.

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Example alert

New tariff action affects 1 of your imports

9018.19.40.00from China37.5% → 47.5%

Its rate today, if a new 10% tariff were added

Top origins · US imports 2025

Top Origins: Countries the US Imports HTS 9018.19.40.00 From

In 2025 the US imported $1.6B of apparatus for functional exploratory examination (HTS 9018.19.40.00), up 8% on 2024, mostly from Costa Rica (28%), Japan (26%) and Germany (16%). Each country's total duty today is shown beside its imports.

Country of originUS imports, 2025Sharevs 2024Total duty today
Costa Rica$434M28%14%12.5%
Japan$403M26%3%12.5%
Germany$249M16%4%10%
Ireland$92M6%394%10%
Malaysia$86M5%370%10%
China$67M4%44%37.5%
Mexico$66M4%93%10%0% with USMCA
Switzerland$50M3%42%12.5%
Canada$35M2%14%10%0% with USMCA
Taiwan$16M1%17%10%

Source: U.S. Census Bureau, general imports. Duty on a $10,000 ocean shipment entered today, before customs fees. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Related codes

Other HTS Codes at This Level

Legal notes

Relevant HTS Notes

Official USITC notes that may affect classification under HTS 9018.19.40.00.

CBP rulings

Related CROSS Rulings for HTS 9018.19.40.00

CBP classification rulings related to 9018.19.40.00. Open a ruling to read how Customs classified a similar product.

hq 955837Nov 2, 1994

Needle assembly; Direct-view scope; Videoendoscope assembly; parts; HQ 952672; HQ 953652; HQ 955076

9002.19.009018.19.40
hq 953652Apr 13, 1994

Endoscopes (video and nonvideo); medical apparatus for functional exploratory examination; optical; heading 8525; EN 90.18; GRI 3(a); Section XVI, note 1(m)

9018.19.409018.90.20
hq 962858Jan 23, 2001

Protest 0401-99-100034; Endoscopes; Needle assemblies

9002.19.009018.19.40
hq H333105Sep 27, 2024

Application for Further Review of Protest No. 4772-23-101801; Classification of a Firefly DE550 Wireless Digital Video Otoscope

9018.19.40
hq H311645Jul 18, 2022

Revocation of NY N300518; Classification of a fluorescence confocal microscope

9018.19.40
ny N309691Feb 26, 2020

The tariff classification of two parts of medical equipment from China

9018.19.40009018.90.60009903.88.019903.88.11
Questions

HTS 9018.19.40.00 FAQ

Something else? Ask us.

What does HTS code 9018.19.40.00 cover?

HTS code 9018.19.40.00 covers apparatus for functional exploratory examination (Apparatus for functional exploratory examination, and parts and accessories thereof), classified under Chapter 90 (Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof) in the US Harmonized Tariff Schedule. The general duty rate is Free.

What is the duty rate for HTS 9018.19.40.00?

The general (Column 1) rate of duty for HTS 9018.19.40.00 is Free. The Column 2 rate, for countries without normal trade relations, is 55%. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.

What is the US tariff on apparatus for functional exploratory examination (HTS 9018.19.40.00) from China?

As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from China pay 37.5% in duties: a duty-free base rate plus Section 301 – China (25%) and Section 301 – Forced Labor (12.5%).

What is the US tariff on apparatus for functional exploratory examination (HTS 9018.19.40.00) from Vietnam?

As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Vietnam pay 12.5% in duties: a duty-free base rate plus Section 301 – Forced Labor (12.5%).

What is the US tariff on apparatus for functional exploratory examination (HTS 9018.19.40.00) from Mexico?

As of Oct 26, 2026, US imports of apparatus for functional exploratory examination (HTS 9018.19.40.00) from Mexico pay 10% in duties: a duty-free base rate plus Section 301 – Forced Labor (10%). Goods that qualify for USMCA pay 0%.

Where does the US import HTS 9018.19.40.00 from?

In 2025 the US imported $1.6B of apparatus for functional exploratory examination under HTS 9018.19.40.00, mostly from Costa Rica (28%), Japan (26%) and Germany (16%), according to U.S. Census Bureau import data.

Which country has the lowest US duty on HTS 9018.19.40.00?

Of the 20 largest sources of US imports, the lowest total duty on HTS 9018.19.40.00 is 0%, from United Kingdom, as of the tariffs in effect on 2026-10-26.

Sources

Primary Sources

The official documents behind the rates and tariffs on this page. Duties are worked out from them as of Revision 20 (2026); check the legal text before you file.