ICD-10-CM 2027
ICD-10 code for fish noxious poisoning
From the official ICD-10-CM alphabetic index entry “Poisoning (acute) › fish (noxious)”. Page updated September 29, 2026.
About coding fish noxious poisoning
The ICD-10-CM code for fish noxious poisoning is T61.9 (Toxic effect of unspecified seafood). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on T61.9.
Within T61, choose T61.9 (Toxic effect of unspecified seafood) only when documentation doesn't support a more specific option: Ciguatera fish poisoning (T61.0), Scombroid fish poisoning (T61.1), other fish and shellfish poisoning (T61.7) and toxic effect of other seafood (T61.8).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific fish noxious poisoning codes (official index)
- bacterial
- ciguatera fish
- scombroid fish
- specified type NEC T61.77 — Other fish poisoning
Common questions about fish noxious poisoning ICD-10 codes
What is the ICD-10 code for fish noxious poisoning?
- T61.9 — Toxic effect of unspecified seafood (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: T61.77.
Is T61.9 billable?
- No. T61.9 is a header code. Report one of its more specific subcodes instead.