8B11.5 Cerebral ischaemic stroke of unknown cause

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

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.

inclusions

• cryptogenic stroke

sections/codes in this section ()

• Cerebral ischaemic stroke due to unspecified occlusion or stenosis of extracranial large artery  (8B11.50)
• Cerebral ischaemic stroke due to unspecified occlusion or stenosis of intracranial large artery  (8B11.51)
• Cerebral ischaemic stroke, unspecified  (8B11.5Z)

coding note

If an additional code is used for anatomy, the artery affected by the stroke should be selected.

postcoordination

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