ICD-10-CM · Chapter 9 · I00–I99
I66.02
Occlusion and stenosis of left middle cerebral artery
Diseases of the circulatory system
Quick facts
- Code
- I66.02
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 9 — Diseases of the circulatory system
- Category
- I66 — Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
- Specificity
- 5 characters
How coders use this code
ICD-10-CM I66.02 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of occlusion and stenosis of left middle cerebral artery. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in I66
- I66Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
- I66.0Occlusion and stenosis of middle cerebral artery
- I66.01Occlusion and stenosis of right middle cerebral artery
- I66.03Occlusion and stenosis of bilateral middle cerebral arteries
- I66.09Occlusion and stenosis of unspecified middle cerebral artery
- I66.1Occlusion and stenosis of anterior cerebral artery
- I66.11Occlusion and stenosis of right anterior cerebral artery
- I66.12Occlusion and stenosis of left anterior cerebral artery
- I66.13Occlusion and stenosis of bilateral anterior cerebral arteries
- I66.19Occlusion and stenosis of unspecified anterior cerebral artery
- I66.2Occlusion and stenosis of posterior cerebral artery
- I66.21Occlusion and stenosis of right posterior cerebral artery
- I66.22Occlusion and stenosis of left posterior cerebral artery
- I66.23Occlusion and stenosis of bilateral posterior cerebral arteries
- I66.29Occlusion and stenosis of unspecified posterior cerebral artery
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