I66

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

Specific Codes Under I66

Use a more specific code below for billing and documentation.

I66.0

Occlusion and stenosis of middle cerebral artery

I66.1

Occlusion and stenosis of anterior cerebral artery

I66.2

Occlusion and stenosis of posterior cerebral artery

I66.3

Occlusion and stenosis of cerebellar arteries

I66.8

Occlusion and stenosis of other cerebral arteries

I66.9

Occlusion and stenosis of unspecified cerebral artery

Inclusion Terms

None inclusion terms specified for this code.

Code First

None code first specified for this code.

Use Additional Code

None use additional code specified for this code.

Cannot Code Together

These codes cannot be used together with the current code, even if both conditions are present.

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

Can Code Together

These codes can be used together with the current code if both conditions are documented.

None specified for this code.

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I66