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I65.9

✓ Billable

Occlusion and stenosis of unspecified precerebral artery

Diseases of the circulatory system (I00-I99)

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Also Known As

Occlusion and stenosis of precerebral artery NOS

❌ Excludes1

inherited from I65

Rules from parent category I65: Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction

  • • insufficiency, NOS, of precerebral artery (G45.-)
  • • insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2)

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Code Information

CodeI65.9
BillableYes
ParentI65
CategoryDiseases of the circulatory system (I00-I99)
Excludes12 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)