9C40

ICD-11 MMS 2026-01

Disorder of the optic nerve

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

Child codes

  • 9C40.0 – Infectious optic neuropathy
  • 9C40.1 – Optic neuritis
  • 9C40.2 – Neuroretinitis
  • 9C40.3 – Perineuritis of optic nerve
  • 9C40.4 – Ischaemic optic neuropathy
  • 9C40.5 – Compressive optic neuropathy
  • 9C40.6 – Infiltrative optic neuropathy
  • 9C40.7 – Traumatic optic neuropathy
  • 9C40.8 – Hereditary optic neuropathy
  • 9C40.9 – Glaucomatous optic neuropathy
  • 9C40.A – Optic disc swelling
  • 9C40.B – Optic atrophy
  • 9C40.Y – Other specified disorder of the optic nerve
  • 9C40.Z – Disorder of the optic nerve, unspecified

Foundation children elsewhere

  • 2A02.12 – Malignant neoplasm of the optic nerve
  • LA13.7 – Congenital malformation of optic disc
  • NA04.10 – Injury of optic nerve, unilateral

Sibling codes

  • 9C41 – Disorder of optic chiasm
  • 9C42 – Disorder of post chiasmal visual pathways
  • 9C43 – Disorder of visual cortex
  • 9C44 – Disorder of higher visual centres
  • 9C4Y – Other specified disorders of the visual pathways or centres
  • 9C4Z – Disorders of the visual pathways or centres, unspecified

Foundation entity

Disorder of the optic nerve – http://id.who.int/icd/entity/1411910384

Allowed postcoordination axes

Part of: 09: Diseases of the visual system