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Chapters ENES DE

XExtension Codes
Substances
XM6S30Medicaments
XM3L75Sedative hypnotic drugs or other central nervous system depressants
Sedative-hypnotic and anxiolytic drugs
XM4YG0Barbiturates and derivatives

XM5J41 category

Primidone

Also indexed as

MysolinePrimidone

Nearby in Barbiturates and derivatives

XM3Z73Narcobarbital
XM01Z3Pentobarbital
XM01F5Amobarbital
XM8TB8Butobarbital
XM2B90Barbital
XM6QG0Secobarbital
XM28V1Talbutal
XM6NX3Vinylbital

PreviousXM2605 — Phenobarbital NextXM45T7 — Barbexaclone

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
XM8CM3Diphenylmethane derivatives
XM96H3Carbamates
XM3XU7Aldehydes and derivatives
XM6R00Piperidinedione derivatives
XM4YG0Barbiturates and derivatives
XM4843Z-drugs
XM0GA0Melatonin receptor agonists
Bromine compounds
Other sedatives, hypnotics and antianxiety drugs
4 more
XM9VX7Vinbarbital
XM89L9Cyclobarbital
XM7ZK9Heptabarbital
XM8FN0Allobarbital
XM8C15Proxibarbal
XM60H4Methylphenobarbital
XM2605Phenobarbital
XM5J41Primidone
XM45T7Barbexaclone
XM64T5Metharbital
XM1ZM1Reposal
XM1WN6Etallobarbital
XM8YV1Aprobarbital
XM50Q3Brallobarbital
XM3UQ5Butalbital
15 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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