ICDwise
T61 ⚠ Non-billable

Toxic effect of noxious substances eaten as seafood

ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes

Code
T61
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Excludes1 — never code together
  • 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-)
7th character
  • The appropriate 7th character is to be added to each code from category T61

Frequently asked questions

What is ICD-10 code T61?
ICD-10-CM code T61 represents Toxic effect of noxious substances eaten as seafood. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T61 billable?
No. T61 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is T61 in?
T61 belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.

Related codes in the T61 category

T61.0 Ciguatera fish poisoning Non-billable T61.1 Scombroid fish poisoning Non-billable T61.7 Other fish and shellfish poisoning Non-billable T61.01 Ciguatera fish poisoning, accidental (unintentional) Non-billable T61.02 Ciguatera fish poisoning, intentional self-harm Non-billable T61.03 Ciguatera fish poisoning, assault Non-billable T61.04 Ciguatera fish poisoning, undetermined Non-billable T61.11 Scombroid fish poisoning, accidental (unintentional) Non-billable

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