ICD-11 classes
08 Diseases of the nervous system
Cerebrovascular diseases
Cerebral ischaemia
8B11 — Cerebral ischaemic stroke
8B11.5 — Cerebral ischaemic stroke of unknown cause

ICD-11 8B11.5 — Cerebral ischaemic stroke of unknown cause

This is a sudden loss of brain function due to a lack of adequate blood flow. It is of an uncertain nature, and approximately 30% of examined events fall into this category.

It includes 1 item.

  • cryptogenic stroke

The diagnosis excludes nothing.

Diagnosis with code 8B11.5 contains 3 clarifying diagnoses:

  1. 8B11.50 — Cerebral ischaemic stroke due to unspecified occlusion or stenosis of extracranial large artery
  2. 8B11.51 — Cerebral ischaemic stroke due to unspecified occlusion or stenosis of intracranial large artery
  3. 8B11.5Z — Cerebral ischaemic stroke, unspecified

The diagnosis is coded elsewhere:

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