ICD-10-CM Code I66
Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.ICD Code I66 is a non-billable code. To code a diagnosis of this type, you must use one of the six child codes of I66 that describes the diagnosis 'occls and stenosis of cereb art, not rslt in cerebral infrc' in more detail.
- I66 Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction NON-BILLABLE
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- I66.11 Occlusion and stenosis of right anterior cerebral artery BILLABLE
- I66.12 Occlusion and stenosis of left anterior cerebral artery BILLABLE
- I66.13 Occlusion and stenosis of bilateral anterior cerebral arteries BILLABLE
- I66.19 Occlusion and stenosis of unspecified anterior cerebral artery BILLABLE
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- I66.21 Occlusion and stenosis of right posterior cerebral artery BILLABLE
- I66.22 Occlusion and stenosis of left posterior cerebral artery BILLABLE
- I66.23 Occlusion and stenosis of bilateral posterior cerebral arteries BILLABLE
- I66.29 Occlusion and stenosis of unspecified posterior cerebral artery BILLABLE
- BILLABLE I66.3 Occlusion and stenosis of cerebellar arteries
- BILLABLE I66.8 Occlusion and stenosis of other cerebral arteries
- BILLABLE I66.9 Occlusion and stenosis of unspecified cerebral artery
The ICD code I66 is used to code Cerebrovascular disease
Cerebrovascular disease, stroke or cerebrovascular accident, is a vascular disease of the cerebral circulation. Arteries supplying oxygen to the brain are affected resulting in one of a number of cerebrovascular diseases. Most commonly this is a stroke or mini-stroke and sometimes can be a hemorrhagic stroke. Any of these can result in vascular dementia.
Cerebral angiogram of a carotid-cavernous fistula
Coding Notes for I66 Info for medical coders on how to properly use this ICD-10 code
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Code Includes Notes:
Includes
Includes notes further define, or give examples of, conditions included in the section. - Embolism of cerebral artery
- Narrowing of cerebral artery
- Obstruction (complete) (partial) of cerebral artery
- Thrombosis of cerebral artery
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Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here." - Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5) - instead, use code I63.3-
ICD-10-CM Alphabetical Index References for 'I66 - Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code I66. Click on any term below to browse the alphabetical index.