Brazil NCM · 8-digit subitem

NCM 2937.90.30 – Levothyroxine sodium

NCM 2937.90.30 (also written 29379030) is Brazil's code for levothyroxine sodium. Its first 6 digits are HS code 2937.90.

Official description of NCM 2937.90.30

PortuguêsOfficial
Levotiroxina sódica
EnglishUnofficial translation

Levothyroxine sodium

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

How to read NCM 2937.90.30

29Chapter 37Heading 90Subheading

HS code 2937.90
Same in every country

3Item 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. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 29 Organic chemicals Produtos químicos orgânicos.
  2. Heading 29.37 Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones. Hormônios, prostaglandinas, tromboxanas e leucotrienos, naturais ou reproduzidos por síntese; seus derivados e análogos estruturais, incluindo os polipeptídios de cadeia modificada, utilizados principalmente como hormônios.
  3. Subheading 2937.90 Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones, n.e.c. in heading 2937 Outros
  4. Subitem 2937.90.30 Levothyroxine sodium Levotiroxina sódica

Other NCM codes under HS 2937.90

2937.90.10 Tiratricol (triac) and its sodium saltTiratricol (triac) e seu sal sódico 2937.90.40 Liothyronine sodiumLiotironina sódica 2937.90.90 Other hormones, derivatives and analoguesOutros

Questions about NCM 2937.90.30

What is NCM 2937.90.30?

NCM 2937.90.30 (29379030) is the Brazilian (Mercosur) code for levothyroxine sodium. Its official Portuguese description is “Levotiroxina sódica”.

What is the HS code for NCM 2937.90.30?

HS 2937.90 (Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones, n.e.c. in heading 2937). 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 2937.90.30?

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.