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Chapters ENES DE

XExtension Codes
Substances
XM6S30Medicaments
XM3L75Sedative hypnotic drugs or other central nervous system depressants
Anaesthetics and therapeutic gases
General anaesthetics
XM8T75Inhaled anaesthetics

XM73B5 category

Nitrous oxide

Also indexed as

Laughing gasNitrous oxide

Nearby in Inhaled anaesthetics

XM4VX3Ethers
XM0TE1Halogenated hydrocarbons
XM0ZA2Anaesthesia endotracheal
XM05Z8Anaesthetic gaseous
XM8V73Anaesthetic halogenated hydrocarbon derivatives
XM5UK1Central nervous system depressants anaesthetic gases
XM42D4Chloroform anaesthetic
XM2DK4Chloroform water, concentrated

PreviousXM9K99 — Fluroxene NextXM9NP2 — Trifluoroethyl vinyl ether

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
XM7452Antiepileptics or antiparkinsonism drugs
XM0HK5Antipsychotics [neuroleptics]
XM4G94Antidepressants
XM98Y0Cannabinoids or hallucinogens
XM9NV2Opioids
XM0RE9Psychostimulants
XM3L75Sedative hypnotic drugs or other central nervous system depressants
XM16M6Other or unspecified drugs, medicaments and biological substances
XM0YW5Topical agents primarily affecting skin and mucous membrane and ophthalmological, otorhinolaryngological or dental drugs
14 more
Anaesthetics and therapeutic gases
Sedative-hypnotic and anxiolytic drugs
XM2XY64-Aminobutyric acid
General anaesthetics
XM7Y85Local anaesthetics
XM8T75Inhaled anaesthetics
XM7D47Intravenous anaesthetics
XM7T11Cyclopropane
XM9MS5Gammahydroxybutyrate
XM5C03Hexobarbital rectal
XM20X3Minaxolone
XM2MR8Tiletamine
XM8DR0Tribromoethanol, rectal
XM8V73Anaesthetic halogenated hydrocarbon derivatives
XM5UK1Central nervous system depressants anaesthetic gases
XM42D4Chloroform anaesthetic
XM2DK4Chloroform water, concentrated
XM9TE3Divinyl ether
XM3EA4Ethyl bromide anaesthetic
XM2D90Ethyl chloride anaesthetic
XM6WF0Ethylene anaesthetic
XM9K99Fluroxene
XM73B5Nitrous oxide
XM9NP2Trifluoroethyl vinyl ether
XM7Q24Vinesthene
XM1C44Desflurane
XM07G7Sevoflurane
XM8X62Xenon
4 more

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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