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Chapters ENES DE

08Diseases of the nervous system
Disorders of nerve root, plexus or peripheral nerves
Mononeuropathy
8C11Mononeuropathies of lower limb
8C11.0Lesion of sciatic nerve

8C11.00 category

Sciatic nerve piriformis syndrome

Also indexed as

Sciatic nerve piriformis syndrome

Nearby in Lesion of sciatic nerve

4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Next4B4Y — Other specified diseases of the immune system

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
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
13 more
8B80-8B8ZDisorders of cranial nerves
8B90-8B9ZNerve root or plexus disorders
8C00-8C0ZPolyneuropathy
8C10-8C1ZMononeuropathy
8C20-8C2ZHereditary neuropathy
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
8C10Mononeuropathies of upper limb
8C11Mononeuropathies of lower limb
8C12Certain specified mononeuropathies
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
8C11.0Lesion of sciatic nerve
8C11.1Meralgia paraesthetica
8C11.2Lesion of femoral nerve
8C11.3Lesion of common peroneal nerve
8C11.4Lesion of tibial nerve
8C11.5Tarsal tunnel syndrome
8C11.6Lesion of plantar nerve
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
8C11.00Sciatic nerve piriformis syndrome
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.

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