Product classification
HS code for Frozen molluscs: 0307.92
Molluscs, n.e.c. in heading 0307, whether in shell or not, frozen.
Classification of frozen molluscs under HS 0307.92
HS code 030792 is a residual or "basket" category used for frozen molluscs that are not specifically named in other subheadings of heading 0307. The Harmonized System uses a hierarchical approach; if a frozen mollusc does not fit into specific categories like oysters (030712), scallops (030722), mussels (030732), cuttlefish and squid (030743), octopus (030752), clams/cockles/ark shells (030772), abalone (030783), or stromboid conchs (030787), it is classified under 030792. This code covers a wide variety of less common or non-specifically listed species. The product must be in a frozen state and can be presented either in shell or deshelled. The classification follows GRI 1 (terms of the heading) and GRI 6 (subheading level), ensuring that all frozen molluscs have a designated place in the nomenclature even if they are not major commodities.
- Covers
- Frozen whelks
- Frozen periwinkles
- Frozen sea urchins (though often classified elsewhere, some jurisdictions include them here)
- Frozen ark shells (if not under 030772)
- Other frozen marine molluscs not elsewhere specified
- Also under 0307.92
- Frozen Whelk Meat (from Canada)
- Frozen Razor Clam (from Chile)
- Frozen Cockle Meat (from Spain)
- Frozen Periwinkles (from France).
Codes often confused with 0307.92
Common mistake. The most common misclassification occurs when a specific mollusc is placed in 030792 instead of its dedicated code. For example, frozen squid should be under 030743, and frozen scallops under 030722. Confusion also arises with HS code 1605, which covers molluscs that have been prepared or preserved (e.g., boiled, marinated, or canned). If the mollusc is cooked and then frozen, it may no longer qualify for Chapter 3.
Top exporters and importers of HS 030792 (the code used for frozen molluscs), 2025
In 2025, the largest exporter of HS 030792 (the code used for frozen molluscs) in UN Comtrade data was Russia, with about 31% of world exports; the largest importer in UN Comtrade data was South Korea, with 29% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 030792, not only frozen molluscs.
Top exporters 2025 · share of world exports
- 1 Russia* ~$95M 31% of world exports · partner records ↗
- 2 China $64M 21% of world exports
- 3 South Korea $28M 8.9% of world exports
World total: $309M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 South Korea $86M 29% of world imports
- 2 Japan $69M 23% of world imports
- 3 China $53M 17% of world imports
World total: $301M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for frozen molluscs
Brazil classifies frozen molluscs under NCM 0307.92.00: HS 0307.92 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about frozen molluscs
What is the HS code for Frozen molluscs?
The HS code for Frozen molluscs is 030792 (Molluscs; n.e.c. in heading 0307, whether in shell or not, frozen). The HS code for frozen molluscs not specifically named elsewhere is 030792.
How do I classify Frozen molluscs for customs?
Frozen molluscs is classified under HS code 030792 — Molluscs; n.e.c. in heading 0307, whether in shell or not, frozen. This is a 6-digit subheading level code.
What does n.e.c. mean in this classification?
It stands for "not elsewhere classified," meaning this code is for species that do not have their own specific HS code in the 0307 group.
Which countries are the top exporters of frozen molluscs (HS 030792)?
In 2025, the top exporters of HS 030792 (the code used for frozen molluscs) in UN Comtrade data were Russia (about $95M, 31% of world exports), China ($64M) and South Korea ($28M). World exports came to about $309M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of frozen molluscs (HS 030792)?
In 2025, the top importers of HS 030792 (the code used for frozen molluscs) in UN Comtrade data were South Korea ($86M, 29% of world imports), Japan ($69M) and China ($53M). World imports came to about $301M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Frozen molluscs the same in all countries?
The base HS code 030792 for Frozen molluscs is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for frozen molluscs in Brazil?
In Brazil, frozen molluscs (HS 030792) is classified under NCM 0307.92.00.