Skip to content

Chapters ENES DE

08Diseases of the nervous system

8A80-8A8Z block

Headache disorders

Exclusions

Headache, not elsewhere classified (MB4D)

8 subordinate codes

8A80Migraine
8A81Tension-type headache
8A82Trigeminal autonomic cephalalgias
8A83Other primary headache disorder
8A84Secondary headache
8A85Painful cranial neuropathies or other facial pains
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Nearby in Diseases of the nervous system

8A00-8A0ZMovement disorders
8A20-8A2ZDisorders with neurocognitive impairment as a major feature
8A40-8A4ZMultiple sclerosis or other white matter disorders
8A60-8A6ZEpilepsy or seizures
8B00-8B2ZCerebrovascular diseases
8B40-8B4ZSpinal cord disorders excluding trauma
8B60-8B6ZMotor neuron diseases or related disorders
8B80-8C4ZDisorders of nerve root, plexus or peripheral nerves

Previous8A60-8A6Z — Epilepsy or seizures Next8B00-8B2Z — Cerebrovascular diseases

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
8A00-8A0ZMovement disorders
8A20-8A2ZDisorders with neurocognitive impairment as a major feature
8A40-8A4ZMultiple sclerosis or other white matter disorders
8A60-8A6ZEpilepsy or seizures
8A80-8A8ZHeadache disorders
8B00-8B2ZCerebrovascular diseases
8B40-8B4ZSpinal cord disorders excluding trauma
8B60-8B6ZMotor neuron diseases or related disorders
8B80-8C4ZDisorders of nerve root, plexus or peripheral nerves
8C60-8D0ZDiseases of neuromuscular junction or muscle
8D20-8D2ZCerebral palsy
8D40-8D4ZNutritional or toxic disorders of the nervous system
8D60-8D6ZDisorders of cerebrospinal fluid pressure or flow
8D80-8D8ZDisorders of autonomic nervous system
8E00-8E0ZHuman prion diseases
7 more
8A80Migraine
8A81Tension-type headache
8A82Trigeminal autonomic cephalalgias
8A83Other primary headache disorder
8A84Secondary headache
8A85Painful cranial neuropathies or other facial pains
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

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.

About · Data & methodology · Privacy · Contact