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Chapters ENES DE

09Diseases of the visual system
Disorders of the eyeball - anterior segment
Disorders of the cornea
9A78Certain specified disorders of cornea

9A78.2 category

Corneal oedema

4 subordinate codes

9A78.20Bullous keratopathy
9A78.21Secondary corneal oedema
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Nearby in Certain specified disorders of cornea

9A78.0Corneal neovascularization
9A78.1Corneal pigmentations or deposits
9A78.3Changes in corneal membranes
9A78.4Corneal degeneration
9A78.5Corneal deformities
9A78.6Anaesthesia of cornea
9A78.7Hypoesthesia of cornea
9A78.8Recurrent erosion of cornea

Previous9A78.1 — Corneal pigmentations or deposits Next9A78.3 — Changes in corneal membranes

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
9A00-9A4ZDisorders of the ocular adnexa or orbit
9A60-9B3ZDisorders of the eyeball - anterior segment
9B50-9C0ZDisorders of the eyeball - posterior segment
9C20-9C2ZDisorders of the eyeball affecting both anterior and posterior segments
9C40-9C4ZDisorders of the visual pathways or centres
9C60-9C61.ZGlaucoma or glaucoma suspect
9C80-9C8ZStrabismus or ocular motility disorders
9D00-9D0ZDisorders of refraction or accommodation
9D20-9D25Postprocedural disorders of eye or ocular adnexa
6 more
9A60-9A6ZDisorders of conjunctiva
9A70-9A7ZDisorders of the cornea
9A80-9A8ZDisorders of the anterior chamber
9A90-9A9ZDisorders of the anterior uvea
9B00-9B0ZFunctional disorders of the pupil
9B10-9B1ZDisorders of lens
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
9A74Neurotrophic keratitis
9A75Autoimmune keratitis
9A76Corneal ulcer
9A77Corneal scars or opacities
9A78Certain specified disorders of cornea
9A79Keratoconjunctivitis sicca
9A7ACorneal abscess
9A7BSclerosing keratitis
Neoplasms of the cornea
6 more
9A78.0Corneal neovascularization
9A78.1Corneal pigmentations or deposits
9A78.2Corneal oedema
9A78.3Changes in corneal membranes
9A78.4Corneal degeneration
9A78.5Corneal deformities
9A78.6Anaesthesia of cornea
9A78.7Hypoesthesia of cornea
9A78.8Recurrent erosion of cornea
9A78.20Bullous keratopathy
9A78.21Secondary corneal oedema
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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