2025
ICD-10-CM
Diagnosis
Code

T61 Toxic effect of noxious substances eaten as seafood

  • Non-billable
  • 2016–2025

T61 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Toxic effect of noxious substances eaten as seafood.

Type 1 excludes

  • Allergic reaction to food, such as:

    • Anaphylactic reaction or shock due to adverse food reaction (T78.0-)

    • Bacterial foodborne intoxications (A05.-)

    • Dermatitis (L23.6, L25.4, L27.2)

    • Food protein-induced enterocolitis syndrome (K52.21)

    • Food protein-induced enteropathy (K52.22)

    • Gastroenteritis (noninfective) (K52.29)

    • Toxic effect of aflatoxin and other mycotoxins (T64)

    • Toxic effect of cyanides (T65.0-)

    • Toxic effect of harmful algae bloom (T65.82-)

    • Toxic effect of hydrogen cyanide (T57.3-)

    • Toxic effect of mercury (T56.1-)

    • Toxic effect of red tide (T65.82-)

Seventh character note

  • The appropriate 7th character is to be added to each code from category T61

Seventh character extensions

  • A: initial encounter

  • D: subsequent encounter

  • S: sequela

Codes

Versions

  1. 2025

    No changes

  2. 2024

    No changes

  3. 2023

    No changes

  4. 2022

    No changes

  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    No changes

  9. 2017

    Code changed

    • Type 1 excludes

        • allergic reaction to food, such as:
        • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
        • bacterial foodborne intoxications (A05.-)
        • dermatitis (L23.6, L25.4, L27.2)
        • gastroenteritis (noninfective) (K52.2)
        • toxic effect of aflatoxin and other mycotoxins (T64)
        • toxic effect of cyanides (T65.0-)
        • toxic effect of harmful algae bloom (T65.82-)
        • toxic effect of hydrogen cyanide (T57.3-)
        • toxic effect of mercury (T56.1-)
        • toxic effect of red tide (T65.82-)
        • allergic reaction to food, such as:
        • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
        • bacterial foodborne intoxications (A05.-)
        • dermatitis (L23.6, L25.4, L27.2)
        • food protein-induced enterocolitis syndrome (K52.21)
        • food protein-induced enteropathy (K52.22)
        • gastroenteritis (noninfective) (K52.29)
        • toxic effect of aflatoxin and other mycotoxins (T64)
        • toxic effect of cyanides (T65.0-)
        • toxic effect of harmful algae bloom (T65.82-)
        • toxic effect of hydrogen cyanide (T57.3-)
        • toxic effect of mercury (T56.1-)
        • toxic effect of red tide (T65.82-)

  10. 2016

    New code