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I66 Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction

Non-Billable/Non-Specific

Includes

  • embolism of cerebral artery
  • narrowing of cerebral artery
  • obstruction (complete) (partial) of cerebral artery
  • thrombosis of cerebral artery

Type 1 Excludes

  • Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5)

Codes

  • I66.0Occlusion and stenosis of middle cerebral artery
    • I66.01Occlusion and stenosis of right middle cerebral artery
    • I66.02Occlusion and stenosis of left middle cerebral artery
    • I66.03Occlusion and stenosis of bilateral middle cerebral arteries
    • I66.09Occlusion and stenosis of unspecified middle cerebral artery
  • I66.1Occlusion and stenosis of anterior cerebral artery
    • I66.11Occlusion and stenosis of right anterior cerebral artery
    • I66.12Occlusion and stenosis of left anterior cerebral artery
    • I66.13Occlusion and stenosis of bilateral anterior cerebral arteries
    • I66.19Occlusion and stenosis of unspecified anterior cerebral artery
  • I66.2Occlusion and stenosis of posterior cerebral artery
    • I66.21Occlusion and stenosis of right posterior cerebral artery
    • I66.22Occlusion and stenosis of left posterior cerebral artery
    • I66.23Occlusion and stenosis of bilateral posterior cerebral arteries
    • I66.29Occlusion and stenosis of unspecified posterior cerebral artery
  • I66.3Occlusion and stenosis of cerebellar arteries
  • I66.8Occlusion and stenosis of other cerebral arteries
  • I66.9Occlusion and stenosis of unspecified cerebral artery