I66 OCCLS AND STENOSIS OF CEREB ART, NOT RSLT IN CEREBRAL INFRC

Code Information

Diagnosis Code: I66

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

Long Description: Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction

The code I66 is NOT VALID for claim submission

Code Classification:

Diseases of the circulatory system (I00–I99)
- Cerebrovascular diseases (I60-I69)
  - Occls and stenosis of cereb art, not rslt in cerebral infrc (I66)
    - I66 Occls and stenosis of cereb art, not rslt in cerebral infrc

Code Version: 2022 ICD-10-CM

The code I66 has the following ICD-10-CM references to the Index of Diseases and Injuries

Includes Notes:
- embolism of cerebral artery
- narrowing of cerebral artery
- obstruction (complete) (partial) of cerebral artery
- thrombosis of cerebral artery
Type 1 Excludes Notes:
- Occlusion and stenosis of cerebral artery causing cerebral infarction (@I63.3*[email protected]*)

ICD-10 Code	ICD-10 Description
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
I66.9	Occlusion and stenosis of unspecified cerebral artery

This page was last updated on: 10/1/2023