9A78.4

ICD-11 MMS 2026-01

Corneal degeneration

Index terms

  • Corneal degeneration
  • degenerative corneal opacity
  • Pellucid marginal degeneration
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  • Arcus senilis
  • arcus of cornea
  • corneal arcus
  • gerontoxon
  • linea corneae senilis
  • Calcareous corneal degeneration
  • Band keratopathy
  • BK - [band keratopathy]
  • band-shaped keratopathy
  • Keratomalacia
  • Nodular corneal degeneration
  • Salzmann nodular degeneration of cornea
  • Salzmann dystrophy
  • Salzmann nodular degeneration
  • Salzmann nodular dystrophy
  • Peripheral corneal degeneration
  • Circulus senilis
  • Cornea guttata
  • Senile corneal degeneration
  • Corneal necrosis

Inclusions

  • Arcus senilis

Excludes

  • 9A76 – Mooren ulcer

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 8A21.0 – Posterior cortical atrophy

Foundation children elsewhere

  • 5B55.3 – Vitamin A deficiency with corneal xerosis
  • 5B55.4 – Vitamin A deficiency with corneal ulceration or keratomalacia
  • 5B55.5 – Vitamin A deficiency with xerophthalmic scars of cornea or blindness

Sibling codes

  • 9A78.0 – Corneal neovascularization
  • 9A78.1 – Corneal pigmentations or deposits
  • 9A78.2 – Corneal oedema
  • 9A78.3 – Changes in corneal membranes
  • 9A78.5 – Corneal deformities
  • 9A78.6 – Anaesthesia of cornea
  • 9A78.7 – Hypoesthesia of cornea
  • 9A78.8 – Recurrent erosion of cornea

Foundation entity

Corneal degeneration – http://id.who.int/icd/entity/699504167

Allowed postcoordination axes

Part of: 9A78: Certain specified disorders of cornea › 09: Diseases of the visual system