Cerebral ischaemic stroke of unknown cause

Definition

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.

Coding note

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

Inclusions

• cryptogenic stroke

3 subordinate codes

• 8B11.50Cerebral ischaemic stroke due to unspecified occlusion or stenosis of extracranial large artery
• 8B11.51Cerebral ischaemic stroke due to unspecified occlusion or stenosis of intracranial large artery
• 4B4ZDiseases of the immune system, unspecified

Nearby in Cerebral ischaemic stroke

• 8B11.0Cerebral ischaemic stroke due to extracranial large artery atherosclerosis
• 8B11.1Cerebral ischaemic stroke due to intracranial large artery atherosclerosis
• 8B11.2Cerebral ischaemic stroke due to embolic occlusion
• 8B11.3Cerebral ischaemic stroke due to small artery occlusion
• 8B11.4Cerebral ischaemic stroke due to other known cause