Live, fresh or chilled

This code covers live, fresh, or chilled mussels (Mytilus & Perna species). Use this code when importing these molluscs, as the general duty treatment is free for standard trade partners or eligible FTA/preference programs, falling within Chapter 3 for fish, crustaceans, and molluscs.

Detailed information for HTS Code 0307.31.00

This section of the Harmonized Tariff Schedule covers live, fresh, or chilled molluscs, specifically mussels. The 0307.31.00 code identifies these mussels when they are in this condition—live, fresh, or chilled—whether in the shell or not. There are two subdivisions: 0307.31.00.10 for farmed mussels and 0307.31.00.90 for all other mussels; use the appropriate suffix to specify whether the mussels were farmed or not. This code excludes items unfit for human consumption, as well as processed products like flours or meals.

Chapter	Chapter 3 - Fish and crustaceans, molluscs and other aquatic invertebrates
Section	Section I - Live Animals; Animal Products

Duty snapshot

Quick reference for the duty outcomes tied to this HTS line.

General Duty

Free

Standard trade partners (NTR)

Special Duty

N/A

Eligible FTA or preference programs

The general duty rate for HTS code 0307.31.00 and its subdivisions (0307.31.00.10 and 0307.31.00.90) is free, applying to standard trade partners (NTR). Special rates are not specified, but eligibility for FTA or preference programs may offer reduced or eliminated duties. Reporting units for this code and its subdivisions are kilograms (kg). This means imports under this code, whether farmed (0307.31.00.10) or other (0307.31.00.90) mussels, are generally free of duty from standard trade partners, with potential for further reductions based on applicable trade agreements.

Rate of Duty (Column 2): Free

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Code subdivisions

0307.31.00.10

Molluscs, whether in shell or not, live, fresh, chilled, frozen, dried, salted or in brine; smoked molluscs, whether in shell or not, whether or not cooked before or during the smoking process: > Mussels (Mytilus spp., Perna spp.): > Live, fresh or chilled > Farmed

0307.31.00.90

View HTS reference

Chapter & section notes

Chapter notes

Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes CHAPTER 3 FISH AND CRUSTACEANS, MOLLUSCS AND OTHER AQUATIC INVERTEBRATES I 3-1 Note 1. This chapter does not cover: (a) Mammals of heading 0106; (b) Meat of mammals of heading 0106 (heading 0208 or 0210); (c) Fish (including livers, roes and milt thereof) or crustaceans, molluscs or other aquatic invertebrates, dead and unfit or unsuitable for human consumption by reason of either their species or their condition (chapter 5); flours, meals or pellets of fish or of crustaceans, molluscs or other aquatic invertebrates, unfit for human consumption (heading 2301); or (d) Caviar or caviar substitutes prepared from fish eggs (heading 1604). 2. In this chapter the term "pellets" means products which have been agglomerated either directly by compression or by the addition of a small quantity of binder. 3. Headings 0305 to 0308 do not cover flours, meals and pellets, fit for human consumption (heading 0309). Additional U.S. Note 1. Certain fish, crustaceans, molluscs and other aquatic invertebrates are provided for in chapter 98. Statistical Note 1. Imports of shrimp or products of shrimp are subject to the provisions of section 609 of Public Law 101-162 of November 21, 1989 (16 U.S.C. 1537 note). Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes I 3-2

Section notes

SECTION I LIVE ANIMALS; ANIMAL PRODUCTS I-1 Notes 1. Any reference in this section to a particular genus or species of an animal, except where the context otherwise requires, includes a reference to the young of that genus or species. 2. Except where the context otherwise requires, throughout the tariff schedule any reference to "dried" products also covers products which have been dehydrated, evaporated or freeze-dried. Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes I-2 Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes

Latest update

Last updated

November 15, 2025

Revised every January & July

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