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Chapters ENES DE

XExtension Codes
Anatomy and topography
Functional anatomy
Nervous system
XA1630Peripheral nervous system
XA6EC2Spinal nerve root
XA5SU4Thoracic nerve root

XA22C5 category

First thoracic nerve root

Also indexed as

First thoracic nerve root

Nearby in Thoracic nerve root

XA8933Second thoracic nerve root
XA2EK5Third thoracic nerve root
XA6NV1Fourth thoracic nerve root
XA8DN4Fifth thoracic nerve root
XA1AB6Sixth thoracic nerve root
XA1VM6Seventh thoracic nerve root
XA2UY4Eighth thoracic nerve root
XA8QS1Ninth thoracic nerve root

NextXA8933 — Second thoracic nerve root

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
Severity Scale Value
Temporality
Aetiology
Topology Scale Value
Anatomy and topography
Histopathology
Dimensions of injury
Dimensions of external causes
Consciousness
5 more
Functional anatomy
Surface topography
Partonomic view
Haematopoietic system
Immune system
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Nervous system
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Auditory system
Circulatory system
Respiratory system
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3 more
XA3JU6Central nervous system
XA1630Peripheral nervous system
XA7718Autonomic nervous system
Nerve
XA65L3Spinal nerve
XA6EC2Spinal nerve root
XA64F0Spinal nerve plexus
XA06U6Peripheral nerve
XA8EK9Cranial Nerve
XA3UZ3Cervical nerve root
XA5SU4Thoracic nerve root
XA4T95Lumbar nerve root
XA9F62Sacral nerve root
XA9J98Dorsal nerve root ganglion
XA1TP8Dorsal nerve root
XA8G34Ventral nerve root ganglion
XA1V70Ventral nerve root
XA22C5First thoracic nerve root
XA8933Second thoracic nerve root
XA2EK5Third thoracic nerve root
XA6NV1Fourth thoracic nerve root
XA8DN4Fifth thoracic nerve root
XA1AB6Sixth thoracic nerve root
XA1VM6Seventh thoracic nerve root
XA2UY4Eighth thoracic nerve root
XA8QS1Ninth thoracic nerve root
XA2VK2Tenth thoracic nerve root
XA61G0Eleventh thoracic nerve root
XA76V2Twelfth thoracic nerve root

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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