ICD-10-CM Codes
I00-I99
I60-I69
Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction I66

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

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I66. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Occlusion and stenosis of cerebral artery causing cerebral infarction (
ICD-10-CM Diagnosis Code I63.3
Cerebral infarction due to thrombosis of cerebral arteries
I63.3-
ICD-10-CM Diagnosis Code I63.5
Cerebral infarction due to unspecified occlusion or stenosis of cerebral arteries
I63.5
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

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

Codes

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

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

Cerebral infarction due to thrombosis of cerebral arteries

Cerebral infarction due to unspecified occlusion or stenosis of cerebral arteries