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Chapters ENES DE

XExtension Codes
Substances
XM9N55Substances, chiefly nonmedicinal
XM0NF6Animal toxin, venom, or poison

XM7FH1 category

Tetrodotoxin

Also indexed as

TTX - [tetrodotoxin]Tetrodotoxintetradotoxin

Nearby in Animal toxin, venom, or poison

XM26J2Amphibian toxin
XM7930Arthropod venom
XM0HS8Bird toxin
XM35H6Mammal toxin
XM2P96Marine and freshwater animal toxins
XM2X61Reptile venom

PreviousXM2X61 — Reptile venom

Browse ICD-11

01Certain infectious or parasitic diseases
02Neoplasms
03Diseases of the blood or blood-forming organs
04Diseases of the immune system
05Endocrine, nutritional or metabolic diseases
06Mental, behavioural or neurodevelopmental disorders
07Sleep-wake disorders
08Diseases of the nervous system
09Diseases of the visual system
10Diseases of the ear or mastoid process
11Diseases of the circulatory system
12Diseases of the respiratory system
13Diseases of the digestive system
14Diseases of the skin
15Diseases of the musculoskeletal system or connective tissue
16Diseases of the genitourinary system
17Conditions related to sexual health
18Pregnancy, childbirth or the puerperium
19Certain conditions originating in the perinatal period
20Developmental anomalies
21Symptoms, signs or clinical findings, not elsewhere classified
22Injury, poisoning or certain other consequences of external causes
23External causes of morbidity or mortality
24Factors influencing health status or contact with health services
25Codes for special purposes
26Supplementary Chapter Traditional Medicine Conditions
VSupplementary section for functioning assessment
XExtension Codes
Histopathology
Dimensions of injury
Dimensions of external causes
Consciousness
Substances
Diagnosis code descriptors
Capacity or context
Health Devices, Equipment and Supplies
Extension codes of particular relevance to skin diseases
5 more
XM6S30Medicaments
XM9N55Substances, chiefly nonmedicinal
Allergens
XM1SE1Agrochemical
XM6U34Alcohol
XM9TZ4Algal toxin
XM9RM0Amyl propionate
XM0NF6Animal toxin, venom, or poison
XM7S46Carbon disulfide
XM2K01Corrosive substance
XM3HX8Cyanide
XM4VA2Dichloroformoxine
41 more
XM26J2Amphibian toxin
XM7930Arthropod venom
XM0HS8Bird toxin
XM35H6Mammal toxin
XM2P96Marine and freshwater animal toxins
XM2X61Reptile venom
XM7FH1Tetrodotoxin

International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).

Release 2026-01. View this entity in the official WHO ICD-11 browser.

This page reproduces WHO classification content for reference. It is not medical advice and must not be used to diagnose or treat. For coding decisions, consult the official release and your national coding guidelines.

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