ICD-10-CM I65: Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction

ICD-10-CM Diagnosis Code (2025)

Official Description for I65

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

Coding Notes & Guidelines for I65

Includes Notes
  • embolism of precerebral artery
  • narrowing of precerebral artery
  • obstruction (complete) (partial) of precerebral artery
  • thrombosis of precerebral artery
Excludes1: Not Coded Here
  • insufficiency, NOS, of precerebral artery (G45.-)
  • insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2)
Inclusion Terms

Occlusion and stenosis of precerebral artery NOS

Child Codes (More Specific Codes for I65):

I65.0 - Occlusion and stenosis of vertebral artery I65.01 - Occlusion and stenosis of right vertebral artery I65.02 - Occlusion and stenosis of left vertebral artery I65.03 - Occlusion and stenosis of bilateral vertebral arteries I65.09 - Occlusion and stenosis of unspecified vertebral artery I65.1 - Occlusion and stenosis of basilar artery I65.2 - Occlusion and stenosis of carotid artery I65.21 - Occlusion and stenosis of right carotid artery I65.22 - Occlusion and stenosis of left carotid artery I65.23 - Occlusion and stenosis of bilateral carotid arteries I65.29 - Occlusion and stenosis of unspecified carotid artery I65.8 - Occlusion and stenosis of other precerebral arteries I65.9 - Occlusion and stenosis of unspecified precerebral artery

About ICD-10-CM Code I65 (Occlusion and stenosis of precerebral arteries)

ICD-10-CM code I65 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM I65 became effective on October 1, 2024.

This page provides detailed information about I65 - Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Occlusion and stenosis of precerebral arteries related to not resulting in cerebral infarction.