H18.4 is the ICD-10 code for Corneal degeneration. It is a four-character subcategory of H18 (Other disorders of cornea), the most specific level in the WHO edition. It belongs to the block H15–H22 (Disorders of sclera, cornea, iris and ciliary body) in Chapter VII, Diseases of the eye and adnexa.
- Code type
- Subcategory (4 characters)
- Chapter
- VII · H00–H59
- Classification
- WHO ICD-10, 2019 version
What H18.4 includes
Conditions and terms that are coded here.
- Arcus senilis
- Band keratopathy
What H18.4 excludes
Conditions that look similar but belong under another code.
- Mooren ulcer H16.0
H18.4 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
H18.4Degenerasjoner i hornhinne
DH184Hornhindedegeneration
- DH184AArcus senilis
- DH184BKeratopatia bandularis
- DH184CSalzmann's nodulære degeneration
- DH184DTerrien's marginale degeneration
- DH184EShagrinering af hornhinden (Crocodile shagreen)
- DH184FLipid degeneration sekundært til karindvækst
H18.4Sarveiskalvon rappeuma
H18.4Hornhautdegeneration
H18.4Dégénérescence de la cornée
H18.4corneadegeneratie
Listed through more specific codes:
- H18.40Unspecified corneal degeneration
- H18.43Other calcerous corneal degeneration
- H18.49Other corneal degeneration
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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