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Chapters ENES DE

14Diseases of the skin
Skin disorders involving specific cutaneous structures
Disorders of the epidermis or epidermal appendages
Disorders of the nail or perionychium
EE10Acquired deformities of the nail plate

EE10.4 category

Nail atrophy

Also indexed as

Nail atrophyOnychomalacia

Nearby in Acquired deformities of the nail plate

EE10.0Abnormality of nail shape
EE10.1Abnormality of nail surface
EE10.2Onycholysis
EE10.3Nail hypertrophy
EE10.5Nail dystrophy, not otherwise specified
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

PreviousEE10.3 — Nail hypertrophy NextEE10.5 — Nail dystrophy, not otherwise specified

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
EA80-EB7YInflammatory dermatoses
EB90-EB9YMetabolic or nutritional disorders affecting the skin
EC10-EC7YGenetic or developmental disorders affecting the skin
EC90-ED3YSensory or psychological disorders affecting the skin
ED50-EG02Skin disorders involving specific cutaneous structures
EG30-EG9ZSkin disorders involving certain specific body regions
EH10-EH40.ZSkin disorders associated with pregnancy, the neonatal period or infancy
EH60-EH7ZAdverse cutaneous reactions to medication
EH90-EK5YSkin disorders provoked by external factors
8 more
ED50-EE21Disorders of the epidermis or epidermal appendages
EE40-EF0YDisorders of the dermis or subcutis
EF20-EG02Disorders of cutaneous blood or lymphatic vessels
ED50-ED5YDisorders of epidermal keratinisation
ED60-ED6YDisorders of skin colour
ED70-ED7YDisorders of hair
ED80-ED9YDisorders of the hair follicle
EE00-EE0YDisorders of eccrine sweat glands or sweating
EE10-EE1ZDisorders of the nail or perionychium
EE20-EE21Disorders of epidermal integrity
EE10Acquired deformities of the nail plate
EE11Acquired abnormalities of nail colour
EE12Infections of the nail or perionychium
EE13Certain disorders affecting the nails or perionychium
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
EE10.0Abnormality of nail shape
EE10.1Abnormality of nail surface
EE10.2Onycholysis
EE10.3Nail hypertrophy
EE10.4Nail atrophy
EE10.5Nail dystrophy, not otherwise specified
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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