I663-char group
Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
⇄ Primary-code rule changed vs QĐ4469
Coding rules (TT06)
- ●Avoid — more specific 4-5 char codes exist (see below)
Coding guidance (WHO 2019)
Incl.: embolism of middle, anterior and posterior cerebral arteries, and cerebellar arteries, not resulting in cerebral infarction narrowing of middle, anterior and posterior cerebral arteries, and cerebellar arteries, not resulting in cerebral infarction obstruction (complete)(partial) of middle, anterior and posterior cerebral arteries, and cerebellar arteries, not resulting in cerebral infarction thrombosis of middle, anterior and posterior cerebral arteries, and cerebellar arteries, not resulting in cerebral infarction Excl.: when causing cerebral infarction (I63.-)
Codes within I66
I66.0Occlusion and stenosis of middle cerebral arteryI66.1Occlusion and stenosis of anterior cerebral arteryI66.2Occlusion and stenosis of posterior cerebral arteryI66.3Occlusion and stenosis of cerebellar arteriesI66.4Occlusion and stenosis of multiple and bilateral cerebral arteriesI66.8Occlusion and stenosis of other cerebral arteryI66.9Occlusion and stenosis of unspecified cerebral artery