2022 ICD-10-CM Codes for Occls and stenosis of cereb art, not rslt in cerebral infrc (I66)

Instructional Notations

Includes Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

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

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used 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 I63.3 I63.5
    • ICD-10 Index

      • 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 NON-BILLABLE CODE
            • I66.0 - Occlusion and stenosis of middle cerebral artery NON-BILLABLE CODE
            • I66.01 - Occlusion and stenosis of right middle cerebral artery BILLABLE CODE
            • I66.02 - Occlusion and stenosis of left middle cerebral artery BILLABLE CODE
            • I66.03 - Occlusion and stenosis of bilateral middle cerebral arteries BILLABLE CODE
            • I66.09 - Occlusion and stenosis of unspecified middle cerebral artery BILLABLE CODE
            • I66.1 - Occlusion and stenosis of anterior cerebral artery NON-BILLABLE CODE
            • I66.11 - Occlusion and stenosis of right anterior cerebral artery BILLABLE CODE
            • I66.12 - Occlusion and stenosis of left anterior cerebral artery BILLABLE CODE
            • I66.13 - Occlusion and stenosis of bi anterior cerebral arteries BILLABLE CODE
            • I66.19 - Occlusion and stenosis of unsp anterior cerebral artery BILLABLE CODE
            • I66.2 - Occlusion and stenosis of posterior cerebral artery NON-BILLABLE CODE
            • I66.21 - Occlusion and stenosis of right posterior cerebral artery BILLABLE CODE
            • I66.22 - Occlusion and stenosis of left posterior cerebral artery BILLABLE CODE
            • I66.23 - Occlusion and stenosis of bi posterior cerebral arteries BILLABLE CODE
            • I66.29 - Occlusion and stenosis of unsp posterior cerebral artery BILLABLE CODE
            • I66.3 - Occlusion and stenosis of cerebellar arteries BILLABLE CODE
            • I66.8 - Occlusion and stenosis of other cerebral arteries BILLABLE CODE
            • I66.9 - Occlusion and stenosis of unspecified cerebral artery BILLABLE CODE