Product classification
HS code for Chilled molluscs: 0307.91
Molluscs, n.e.c. in heading 0307, whether in shell or not, live or fresh, chilled.
Classification of chilled molluscs under HS 0307.91
HS code 0307.91 serves as a residual or "basket" category for molluscs that are live, fresh, or chilled but are not specifically named in the preceding subheadings of 0307. Heading 0307 encompasses a wide variety of molluscs, including oysters, scallops, mussels, cuttlefish, squid, octopus, snails, and clams. While major commercial species have their own specific subheadings (e.g., 0307.11 for oysters), 0307.91 captures all other species not elsewhere classified (n.e.c.). This includes various types of sea slugs, certain types of clams not covered elsewhere, and other minor mollusc species. The classification requires that the product be in a live, fresh, or chilled state. Chilling is defined as the reduction of temperature to near freezing without the formation of ice crystals within the tissue. This code is vital for maintaining the integrity of the Harmonized System by ensuring every mollusc product has a designated place based on its biological classification and state of preservation. Importers must ensure that the mollusc in question does not belong to a genus specifically mentioned in subheadings 0307.11 through 0307.89 before utilizing this residual code. The classification also excludes aquatic invertebrates other than crustaceans and molluscs, which are found in heading 0308.
- Covers
- Live or chilled clams not specified in other subheadings
- Fresh cockles and ark shells, chilled
- Chilled razor clams (Solen spp.)
- Other live, fresh, or chilled molluscs n.e.c.
- Also under 0307.91
- Live Whelk (Buccinum undatum)
- Fresh Razor Clams (Ensis directus)
- Chilled Cockles (Cerastoderma edule)
- Live Periwinkles (Littorina littorea).
Codes often confused with 0307.91
Common mistake. The most common misclassification is using 0307.91 for molluscs that actually have their own specific codes. For example, chilled octopus should be under 0307.51, and chilled squid should be under 0307.42. Another error is confusing 0307.91 (fresh/chilled) with 0307.92 (frozen). Additionally, if the molluscs are dried, salted, or in brine, they must be classified under 0307.99. Importers often default to the residual category without checking for more specific species-based subheadings.
Top exporters and importers of HS 030791 (the code used for chilled molluscs), 2025
In 2025, the largest exporter of HS 030791 (the code used for chilled molluscs) in UN Comtrade data was Vietnam, with about 31% of world exports; the largest importer in UN Comtrade data was China, with 65% 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 030791, not only chilled molluscs.
Top exporters 2025 · share of world exports
- 1 Vietnam* ~$41M 31% of world exports · partner records ↗
- 2 France $13M 10.0% of world exports
- 3 South Korea $12M 8.6% of world exports
World total: $134M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $185M 65% of world imports
- 2 Hong Kong $32M 11% of world imports
- 3 France $15M 5.2% of world imports
World total: $283M 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 chilled molluscs
Brazil classifies chilled molluscs under NCM 0307.91.00: HS 0307.91 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about chilled molluscs
What is the HS code for Chilled molluscs?
The HS code for Chilled molluscs is 030791 (Molluscs; n.e.c. in heading 0307, whether in shell or not, live or fresh, chilled). The HS code for live, fresh, or chilled molluscs not elsewhere specified is 0307.91.
How do I classify Chilled molluscs for customs?
Chilled molluscs is classified under HS code 030791 — Molluscs; n.e.c. in heading 0307, whether in shell or not, live or fresh, chilled. This is a 6-digit subheading level code.
Does this include chilled octopus?
No, chilled octopus is specifically classified under HS code 0307.51. Code 0307.91 is only for species that do not have their own dedicated subheading.
Which countries are the top exporters of chilled molluscs (HS 030791)?
In 2025, the top exporters of HS 030791 (the code used for chilled molluscs) in UN Comtrade data were Vietnam (about $41M, 31% of world exports), France ($13M) and South Korea ($12M). World exports came to about $134M, 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 chilled molluscs (HS 030791)?
In 2025, the top importers of HS 030791 (the code used for chilled molluscs) in UN Comtrade data were China ($185M, 65% of world imports), Hong Kong ($32M) and France ($15M). World imports came to about $283M, 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 Chilled molluscs the same in all countries?
The base HS code 030791 for Chilled 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 chilled molluscs in Brazil?
In Brazil, chilled molluscs (HS 030791) is classified under NCM 0307.91.00.