ICD10Check
CheckerBrowseOpen

I65

⚠ Non-billable (Header)

Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction

Diseases of the circulatory system (I00-I99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

✅ Includes

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

❌ Excludes1

direct

Cannot be coded with I65

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

Child Codes (5)

I65.0Occlusion and stenosis of vertebral arteryI65.1Occlusion and stenosis of basilar arteryI65.2Occlusion and stenosis of carotid arteryI65.8Occlusion and stenosis of other precerebral arteriesI65.9Occlusion and stenosis of unspecified precerebral artery

🧪 Validate Combinations

Add I65 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeI65
BillableNo — Header code
CategoryDiseases of the circulatory system (I00-I99)
Excludes12 rule(s)
Excludes20 note(s)
Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)