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
  • Code Version: 2025 ICD-10-CM

The code I66 is NOT VALID for claim submission

Code Classification

References to Index of Diseases and Injuries

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]*)

Similar Codes

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: 10/1/2025
Previous Code
Next Code