I66 | 
		  | 
		Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction   | 
	
	
		 |  | 
		
	
		| Includes | 
		embolism of cerebral artery narrowing of cerebral artery obstruction (complete) (partial) of cerebral artery thrombosis of cerebral artery
  | 
	 
	
		| Excludes1 | 
		Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5)
  | 
	 
 
 | 
	
 |  | 
	
		 I66.0 | 
		 | 
		Occlusion and stenosis of middle cerebral artery | 
	 
 |  | 
	
		 I66.01 | 
		 | 
		Occlusion and stenosis of right middle cerebral artery | 
	 
  |   |  | 
	
		 I66.02 | 
		 | 
		Occlusion and stenosis of left middle cerebral artery | 
	 
  |   |  | 
	
		 I66.03 | 
		 | 
		Occlusion and stenosis of bilateral middle cerebral arteries | 
	 
  |   |  | 
	
		 I66.09 | 
		 | 
		Occlusion and stenosis of unspecified middle cerebral artery | 
	 
  |    | 
 |  | 
	
		 I66.1 | 
		 | 
		Occlusion and stenosis of anterior cerebral artery | 
	 
 |  | 
	
		 I66.11 | 
		 | 
		Occlusion and stenosis of right anterior cerebral artery | 
	 
  |   |  | 
	
		 I66.12 | 
		 | 
		Occlusion and stenosis of left anterior cerebral artery | 
	 
  |   |  | 
	
		 I66.13 | 
		 | 
		Occlusion and stenosis of bilateral anterior cerebral arteries | 
	 
  |   |  | 
	
		 I66.19 | 
		 | 
		Occlusion and stenosis of unspecified anterior cerebral artery | 
	 
  |    | 
 |  | 
	
		 I66.2 | 
		 | 
		Occlusion and stenosis of posterior cerebral artery | 
	 
 |  | 
	
		 I66.21 | 
		 | 
		Occlusion and stenosis of right posterior cerebral artery | 
	 
  |   |  | 
	
		 I66.22 | 
		 | 
		Occlusion and stenosis of left posterior cerebral artery | 
	 
  |   |  | 
	
		 I66.23 | 
		 | 
		Occlusion and stenosis of bilateral posterior cerebral arteries | 
	 
  |   |  | 
	
		 I66.29 | 
		 | 
		Occlusion and stenosis of unspecified posterior cerebral artery | 
	 
  |    | 
 |  | 
	
		 I66.3 | 
		 | 
		Occlusion and stenosis of cerebellar arteries | 
	 
  | 
 |  | 
	
		 I66.8 | 
		  | 
		Occlusion and stenosis of other cerebral arteries | 
	 
	
		 |  | 
		
| Occlusion and stenosis of perforating arteries |   
 | 
	   | 
 |  | 
	
		 I66.9 | 
		 | 
		Occlusion and stenosis of unspecified cerebral artery | 
	 
  |