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XExtension Codes
Substances
XM6S30Medicaments
XM1950Agents primarily acting on smooth and skeletal muscles or the respiratory system
XM4J58Antihistamines

XM3B95 category

Second-generation antihistamine

14 subordinate codes

XM6G21Piperazine derivatives of second-generation antihistaminic agents
XM7S59Astemizole
XM2S36Terfenadine
XM4PE5Loratadine
XM4F63Ketotifen
XM4GA2Acrivastine
XM9VB8Azelastine
XM9EU0Ebastine
XM7J45Mizolastine
XM1586Fexofenadine
XM2656Desloratadine
XM3E25Rupatadine
XM1WZ8Bilastine
XM3YG8Quifenadine

Also indexed as

Second-generation antihistamine

Nearby in Antihistamines

XM2JE5First-generation antihistamine
XM57C9Pyrrobutamine
XM8ZS4Deptropine
XM0J21Tritoqualine
XM70F3Pimethixene
XM5BJ5Epinastine
XM40P7Sequifenadine
XM9L77Doxantrazole

PreviousXM2JE5 — First-generation antihistamine NextXM57C9 — Pyrrobutamine

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
XM3973Agents primarily affecting the cardiovascular system
XM6CH2Drugs primarily affecting the autonomic nervous system
XM7YD4Drugs used in addictive disorders
XM8014Antivertigo and motion sickness preparations
XM1950Agents primarily acting on smooth and skeletal muscles or the respiratory system
XM5MU9Systemic antibiotics, anti-infectives or antiparasitics
XM0QJ8Neuroprotective agents, not elsewhere classified
XM7BA9Analgesics, antipyretics or anti-inflammatory drugs
XM7452Antiepileptics or antiparkinsonism drugs
14 more
Oxytocic drugs
Muscle relaxants
Other drugs acting on muscles
XM9P78Drugs for obstructive airway diseases
Expectorants and mucolytics
Antitussives
XM4J58Antihistamines
Respiratory stimulants
XM04S2Other respiratory system products
XM2JE5First-generation antihistamine
XM3B95Second-generation antihistamine
XM57C9Pyrrobutamine
XM8ZS4Deptropine
XM0J21Tritoqualine
XM70F3Pimethixene
XM5BJ5Epinastine
XM40P7Sequifenadine
XM9L77Doxantrazole
XM6G21Piperazine derivatives of second-generation antihistaminic agents
XM7S59Astemizole
XM2S36Terfenadine
XM4PE5Loratadine
XM4F63Ketotifen
XM4GA2Acrivastine
XM9VB8Azelastine
XM9EU0Ebastine
XM7J45Mizolastine
XM1586Fexofenadine
XM2656Desloratadine
XM3E25Rupatadine
XM1WZ8Bilastine
XM3YG8Quifenadine

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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