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ICD-10-CM I66: Occls and stenosis of cereb art, n… · Codelle

I66

ICD-10-CM

Occls and stenosis of cereb art, not rslt in cerebral infrc

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

Clinical Notes

Includes

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

Excludes 1 · Not coded here

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

Code Hierarchy

Subcodes (6)

I66.0Occlusion and stenosis of middle cerebral artery

I66.1Occlusion and stenosis of anterior cerebral artery

I66.2Occlusion and stenosis of 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

Same Category

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 bi anterior cerebral arteries

I66.19Occlusion and stenosis of unsp anterior cerebral artery

+5 more in this category

Code History

Added in FY2024
Active (FY2026)

Change History

FY2026 snapshotOccls and stenosis of cereb art, not rslt in cerebral infrc
FY2025 snapshotOccls and stenosis of cereb art, not rslt in cerebral infrc
FY2024 snapshotOccls and stenosis of cereb art, not rslt in cerebral infrc