8A45.21

ICD-11 MMS 2026-01

Subacute necrotising myelitis

Description

Foix-Alajouanine syndrome, also called subacute ascending necrotising myelitis, results from chronic congestion of the extrinsic pial veins of the spinal cord and of the intrinsic subpial network. It is characterised by progressive ascending deficit over a period of several months or years.

Index terms

  • Subacute necrotising myelitis

Exclusions from above levels

  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
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  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • 8A45.20 – White matter disorder due to CADASIL
  • 8A45.2Y – Other specified white matter disorders due to vascular abnormality or ischemia
  • 8A45.2Z – White matter disorders due to vascular abnormality or ischemia, unspecified

Foundation entity

Subacute necrotising myelitis – http://id.who.int/icd/entity/937824238

Part of: 8A45.2: White matter disorders due to vascular abnormality or ischemia › 8A45: Secondary white matter disorders › 08: Diseases of the nervous system