9C40.40

ICD-11 MMS 2026-01

Anterior ischemic optic neuropathy

Description

This refers to anterior ischemic damage to the optic nerve due to any cause. Damage and death of these nerve cells, or neurons, leads to characteristic features of optic neuropathy.

Index terms

  • Anterior ischemic optic neuropathy
  • Arteritic anterior ischemic optic neuropathy
  • Giant cell arteritis anterior ischemic optic neuropathy
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  • Other arteritic anterior ischemic optic neuropathy
  • Non-arteritic anterior ischemic optic neuropathy
  • Idiopathic non-arteritic ischemic optic neuropathy
  • Secondary non-arteritic ischemic optic neuropathy
  • Secondary non-arteritic ischemic optic neuropathy associated with systemic hypotension
  • Secondary non-arteritic ischemic optic neuropathy associated with blood loss
  • Secondary non-arteritic ischemic optic neuropathy associated with anaemia
  • Radiation optic neuropathy
  • Diabetic papillopathy
  • Perioperative secondary non-arteritic ischemic optic neuropathy

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

Sibling codes

  • 9C40.41 – Posterior ischemic optic neuropathy
  • 9C40.4Y – Other specified ischaemic optic neuropathy
  • 9C40.4Z – Ischaemic optic neuropathy, unspecified

Foundation entity

Anterior ischemic optic neuropathy – http://id.who.int/icd/entity/632323575

Allowed postcoordination axes

Part of: 9C40.4: Ischaemic optic neuropathy › 9C40: Disorder of the optic nerve › 09: Diseases of the visual system