I65: Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
Codes under I65 (Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| I65.0 | Occlusion and stenosis of vertebral artery | — |
| I65.0 | Occlusion and stenosis of vertebral artery | — |
| I65.01 | Occlusion and stenosis of right vertebral artery | ✓ |
| I65.01 | Occlusion and stenosis of right vertebral artery | ✓ |
| I65.1 | Occlusion and stenosis of basilar artery | ✓ |
| I65.1 | Occlusion and stenosis of basilar artery | ✓ |
| I65.02 | Occlusion and stenosis of left vertebral artery | ✓ |
| I65.02 | Occlusion and stenosis of left vertebral artery | ✓ |
| I65.2 | Occlusion and stenosis of carotid artery | — |
| I65.2 | Occlusion and stenosis of carotid artery | — |
| I65.03 | Occlusion and stenosis of bilateral vertebral arteries | ✓ |
| I65.03 | Occlusion and stenosis of bilateral vertebral arteries | ✓ |
| I65.8 | Occlusion and stenosis of other precerebral arteries | ✓ |
| I65.8 | Occlusion and stenosis of other precerebral arteries | ✓ |
| I65.09 | Occlusion and stenosis of unspecified vertebral artery | ✓ |
| I65.09 | Occlusion and stenosis of unspecified vertebral artery | ✓ |
| I65.9 | Occlusion and stenosis of unspecified precerebral artery | ✓ |
| I65.9 | Occlusion and stenosis of unspecified precerebral artery | ✓ |
| I65.21 | Occlusion and stenosis of right carotid artery | ✓ |
| I65.21 | Occlusion and stenosis of right carotid artery | ✓ |
| I65.22 | Occlusion and stenosis of left carotid artery | ✓ |
| I65.22 | Occlusion and stenosis of left carotid artery | ✓ |
| I65.23 | Occlusion and stenosis of bilateral carotid arteries | ✓ |
| I65.23 | Occlusion and stenosis of bilateral carotid arteries | ✓ |
| I65.29 | Occlusion and stenosis of unspecified carotid artery | ✓ |
| I65.29 | Occlusion and stenosis of unspecified carotid artery | ✓ |
Frequently asked questions
What is ICD-10-CM code I65?
I65 is an ICD-10-CM category covering Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction. It contains 26 more specific diagnosis codes, 22 of which are billable.
Is I65 a billable code?
No — I65 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example I65.0 — Occlusion and stenosis of vertebral artery). 22 of the 26 codes under I65 are billable.
What codes fall under I65?
I65 includes I65.0, I65.0, I65.01, I65.01, I65.1, plus 21 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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