Brazil NCM · 8-digit code

NCM 8401.10.00 – Nuclear reactors

NCM 8401.10.00 (also written 84011000) is Brazil's code for nuclear reactors. Its first 6 digits are HS code 8401.10.

Official description of NCM 8401.10.00

PortuguêsOfficial
Reatores nucleares
EnglishUnofficial translation

Nuclear reactors

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 8401.10.00

84Chapter 01Heading 10Subheading

HS code 8401.10
Same in every country

0Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. The last two digits are 00 because Brazil does not split this HS code further. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 84 Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof Reatores nucleares, caldeiras, máquinas, aparelhos e instrumentos mecânicos, e suas partes.
  2. Heading 84.01 Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors, machinery and apparatus for isotopic separation Reatores nucleares; elementos combustíveis (cartuchos) não irradiados, para reatores nucleares; máquinas e aparelhos para a separação de isótopos.
  3. Subheading 8401.10 Nuclear reactors
  4. Subitem 8401.10.00 Nuclear reactors Reatores nucleares

Questions about NCM 8401.10.00

What is NCM 8401.10.00?

NCM 8401.10.00 (84011000) is the Brazilian (Mercosur) code for nuclear reactors. Its official Portuguese description is “Reatores nucleares”.

What is the HS code for NCM 8401.10.00?

HS 8401.10 (Nuclear reactors). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 8401.10.00?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.