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HSChapter 16
U.S. imports of prepared or preserved molluscs (not elsewhere specified) (HS 160559) totaled $580K in April 2026, traded with 15 countries.
Importers of Prepared or Preserved Molluscs (Not Elsewhere Specified) paid $74K in duties in April 2026 — an effective duty rate of 15% on $500K in dutiable value, based on actual customs collections rather than the published tariff schedule. Prepared or Preserved Molluscs (Not Elsewhere Specified) imports of $580K in April 2026 ran 48% above the year-to-date monthly average of $391K.
Last updated: April 2026 dataServing as the catch-all for prepared and preserved molluscs not covered by the more specific headings for oysters, mussels, scallops, clams, abalone, octopus, squid, or snails, this residual heading captures a diverse range of specialty shellfish products. Thailand and Vietnam lead US supply, with China also a significant source — and goods of Chinese origin may be subject to Section 301 tariffs. The schedule distinguishes composite products containing fish meat or prepared meals (1605590500) from straight mollusc preparations (1605590000 / 1605596000). Correct classification requires confirming that the specific mollusc species is not more precisely described under another heading in Chapter 16. FDA prior notice and HACCP compliance are required; consult a licensed customs broker to confirm the appropriate tariff line.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Chapter 16 contains dedicated headings for oysters, mussels, scallops, clams, cockles, arkshells, abalone, octopus, squid, cuttlefish, and snails. If the mollusc species is covered by one of those specific headings, it must be classified there rather than under the residual 160559 heading. Only species not described elsewhere — such as certain whelks, periwinkles, or lesser-traded bivalves — properly fall here.
Line 1605590500 applies when the preparation contains fish meat in addition to mollusc, or constitutes a prepared meal. This distinction affects not only classification but potentially the applicable duty rate. Importers of mixed seafood products or ready-to-eat preparations should have their product formulation reviewed to determine whether the fish-meat line or the straight mollusc line is correct.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| THAILAND | $255K | -- | -$255K |
| CHINA | $98K | -- | -$98K |
| MEXICO | $80K | -- | -$80K |
| KOREA, SOUTH | $41K | $10K | -$31K |
| SPAIN | $34K | -- | -$34K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 1605596000 | MOLLUSCS, PREPARED OR PRESERVED, NESOI | $465K | 16.33% | $63K |
| 1605590500 | MOLLUSCS PRODUCTS WITH FISH MEAT; PREP MEALS,NESOI | $115K | 10.00% | $12K |
MOLLUSCS, PREPARED OR PRESERVED, NESOI
MOLLUSCS PRODUCTS WITH FISH MEAT; PREP MEALS,NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 1605590000 | MOLLUSCS, PREPARED OR PRESERVED, NESOI | $16K |
MOLLUSCS, PREPARED OR PRESERVED, NESOI
2.2K kg
TUNAS, SKIPJACK TUNA AND BONITO, PREP OR PRESERVED
HS 160414
SHRIMP & PRAWNS PREP/PRESERVED NOT AIRTIGHT CONTNR
HS 160521
PREPARED OR PRESERVED BOVINE MEAT ETC. NESOI
HS 160250
CRAB, PREPARED OR PRESERVED
HS 160510
PREPARED OR PRESERVED CHICKEN MEAT OR OFFAL, NESOI
HS 160232
SALMON, PREPARED OR PRESERVED, WHOLE OR PIECES
HS 160411
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $265K | $10K | -$255K |
| New York | $137K | -- | -$137K |
| Illinois | $102K | -- | -$102K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $185K | -- | -$185K |
| NEWARK, NJ | $137K | -- | -$137K |
| TACOMA, WA | $85K | -- | -$85K |