Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction

**Includes:** - embolism of precerebral artery - narrowing of precerebral artery - obstruction (complete) (partial) of precerebral artery - thrombosis of precerebral artery

**Excludes1:** - insufficiency, NOS, of precerebral artery (G45.-) - insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2)