Toxic effect of noxious substances eaten as seafood (T61)

• Injury, poisoning and certain other consequences of external causes (S00–T88)

  • Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)

    • Toxic effect of noxious substances eaten as seafood (T61)

      • T61 Toxic effect of noxious substances eaten as seafood

      • T61.0 Ciguatera fish poisoning

      • T61.01 Ciguatera fish poisoning, accidental (unintentional)

      • T61.01XA Ciguatera fish poisoning, accidental (unintentional), initial encounter
      • T61.01XD Ciguatera fish poisoning, accidental (unintentional), subsequent encounter
      • T61.01XS Ciguatera fish poisoning, accidental (unintentional), sequela

      • T61.02 Ciguatera fish poisoning, intentional self-harm

      • T61.02XA Ciguatera fish poisoning, intentional self-harm, initial encounter
      • T61.02XD Ciguatera fish poisoning, intentional self-harm, subsequent encounter
      • T61.02XS Ciguatera fish poisoning, intentional self-harm, sequela

      • T61.03 Ciguatera fish poisoning, assault

      • T61.03XA Ciguatera fish poisoning, assault, initial encounter
      • T61.03XD Ciguatera fish poisoning, assault, subsequent encounter
      • T61.03XS Ciguatera fish poisoning, assault, sequela

      • T61.04 Ciguatera fish poisoning, undetermined

      • T61.04XA Ciguatera fish poisoning, undetermined, initial encounter
      • T61.04XD Ciguatera fish poisoning, undetermined, subsequent encounter
      • T61.04XS Ciguatera fish poisoning, undetermined, sequela

      • T61.1 Scombroid fish poisoning

      • T61.11 Scombroid fish poisoning, accidental (unintentional)

      • T61.11XA Scombroid fish poisoning, accidental (unintentional), initial encounter
      • T61.11XD Scombroid fish poisoning, accidental (unintentional), subsequent encounter
      • T61.11XS Scombroid fish poisoning, accidental (unintentional), sequela

      • T61.12 Scombroid fish poisoning, intentional self-harm

      • T61.12XA Scombroid fish poisoning, intentional self-harm, initial encounter
      • T61.12XD Scombroid fish poisoning, intentional self-harm, subsequent encounter
      • T61.12XS Scombroid fish poisoning, intentional self-harm, sequela

      • T61.13 Scombroid fish poisoning, assault

      • T61.13XA Scombroid fish poisoning, assault, initial encounter
      • T61.13XD Scombroid fish poisoning, assault, subsequent encounter
      • T61.13XS Scombroid fish poisoning, assault, sequela

      • T61.14 Scombroid fish poisoning, undetermined

      • T61.14XA Scombroid fish poisoning, undetermined, initial encounter
      • T61.14XD Scombroid fish poisoning, undetermined, subsequent encounter
      • T61.14XS Scombroid fish poisoning, undetermined, sequela

      • T61.7 Other fish and shellfish poisoning

      • T61.77 Other fish poisoning

      • T61.771 Other fish poisoning, accidental (unintentional)

      • T61.771A Other fish poisoning, accidental (unintentional), initial encounter
      • T61.771D Other fish poisoning, accidental (unintentional), subsequent encounter
      • T61.771S Other fish poisoning, accidental (unintentional), sequela

      • T61.772 Other fish poisoning, intentional self-harm

      • T61.772A Other fish poisoning, intentional self-harm, initial encounter
      • T61.772D Other fish poisoning, intentional self-harm, subsequent encounter
      • T61.772S Other fish poisoning, intentional self-harm, sequela

      • T61.773 Other fish poisoning, assault

      • T61.773A Other fish poisoning, assault, initial encounter
      • T61.773D Other fish poisoning, assault, subsequent encounter
      • T61.773S Other fish poisoning, assault, sequela

      • T61.774 Other fish poisoning, undetermined

      • T61.774A Other fish poisoning, undetermined, initial encounter
      • T61.774D Other fish poisoning, undetermined, subsequent encounter
      • T61.774S Other fish poisoning, undetermined, sequela

      • T61.78 Other shellfish poisoning

      • T61.781 Other shellfish poisoning, accidental (unintentional)

      • T61.781A Other shellfish poisoning, accidental (unintentional), initial encounter
      • T61.781D Other shellfish poisoning, accidental (unintentional), subsequent encounter
      • T61.781S Other shellfish poisoning, accidental (unintentional), sequela

      • T61.782 Other shellfish poisoning, intentional self-harm

      • T61.782A Other shellfish poisoning, intentional self-harm, initial encounter
      • T61.782D Other shellfish poisoning, intentional self-harm, subsequent encounter
      • T61.782S Other shellfish poisoning, intentional self-harm, sequela

      • T61.783 Other shellfish poisoning, assault

      • T61.783A Other shellfish poisoning, assault, initial encounter
      • T61.783D Other shellfish poisoning, assault, subsequent encounter
      • T61.783S Other shellfish poisoning, assault, sequela

      • T61.784 Other shellfish poisoning, undetermined

      • T61.784A Other shellfish poisoning, undetermined, initial encounter
      • T61.784D Other shellfish poisoning, undetermined, subsequent encounter
      • T61.784S Other shellfish poisoning, undetermined, sequela

      • T61.8 Toxic effect of other seafood

      • T61.8X Toxic effect of other seafood

      • T61.8X1 Toxic effect of other seafood, accidental (unintentional)

      • T61.8X1A Toxic effect of other seafood, accidental (unintentional), initial encounter
      • T61.8X1D Toxic effect of other seafood, accidental (unintentional), subsequent encounter
      • T61.8X1S Toxic effect of other seafood, accidental (unintentional), sequela

      • T61.8X2 Toxic effect of other seafood, intentional self-harm

      • T61.8X2A Toxic effect of other seafood, intentional self-harm, initial encounter
      • T61.8X2D Toxic effect of other seafood, intentional self-harm, subsequent encounter
      • T61.8X2S Toxic effect of other seafood, intentional self-harm, sequela

      • T61.8X3 Toxic effect of other seafood, assault

      • T61.8X3A Toxic effect of other seafood, assault, initial encounter
      • T61.8X3D Toxic effect of other seafood, assault, subsequent encounter
      • T61.8X3S Toxic effect of other seafood, assault, sequela

      • T61.8X4 Toxic effect of other seafood, undetermined

      • T61.8X4A Toxic effect of other seafood, undetermined, initial encounter
      • T61.8X4D Toxic effect of other seafood, undetermined, subsequent encounter
      • T61.8X4S Toxic effect of other seafood, undetermined, sequela

      • T61.9 Toxic effect of unspecified seafood

      • T61.91 Toxic effect of unspecified seafood, accidental (unintentional)

      • T61.91XA Toxic effect of unspecified seafood, accidental (unintentional), initial encounter
      • T61.91XD Toxic effect of unspecified seafood, accidental (unintentional), subsequent encounter
      • T61.91XS Toxic effect of unspecified seafood, accidental (unintentional), sequela

      • T61.92 Toxic effect of unspecified seafood, intentional self-harm

      • T61.92XA Toxic effect of unspecified seafood, intentional self-harm, initial encounter
      • T61.92XD Toxic effect of unspecified seafood, intentional self-harm, subsequent encounter
      • T61.92XS Toxic effect of unspecified seafood, intentional self-harm, sequela

      • T61.93 Toxic effect of unspecified seafood, assault

      • T61.93XA Toxic effect of unspecified seafood, assault, initial encounter
      • T61.93XD Toxic effect of unspecified seafood, assault, subsequent encounter
      • T61.93XS Toxic effect of unspecified seafood, assault, sequela

      • T61.94 Toxic effect of unspecified seafood, undetermined

      • T61.94XA Toxic effect of unspecified seafood, undetermined, initial encounter
      • T61.94XD Toxic effect of unspecified seafood, undetermined, subsequent encounter
      • T61.94XS Toxic effect of unspecified seafood, undetermined, sequela

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

• 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 Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

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

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

• A - initial encounter
• D - subsequent encounter
• S - sequela

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.