All ICD10 Codes

I65.8

Billable
ChapterI00–I99
Ranksubcategory
Official Description

Occlusion and stenosis of other precerebral arteries

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).
General instructions are available for the parent sections:
View CH9 NotesView I60-I69 NotesView I65 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)
I60-I69Cerebrovascular diseases (I60-I69)
I65Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
I65.8Occlusion and stenosis of other precerebral arteries

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I65.8:

categoryI65
Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
View context instructions
blockI60-I69
Cerebrovascular diseases (I60-I69)
View context instructions
chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I65.8. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

14 raw paths
Beck's syndrome (anterior spinal artery occlusion)1 unique routes
Direct index entry→I65.8
Céstan-Raymond syndrome1 unique routes
Direct index entry→I65.8
Embolism (multiple) (paradoxical)5 unique routes
artery(5 variants)
auditory, internal→I65.8
choroidal (anterior)→I65.8
communicating posterior→I65.8
hypophyseal→I65.8
pontine→I65.8
Narrowing1 unique routes
artery
auditory, internal→I65.8
Occlusion, occluded2 unique routes
artery(2 variants)
auditory, internal→I65.8
precerebral
specified NEC→I65.8
Raymond (-Céstan) syndrome1 unique routes
Direct index entry→I65.8
Syndrome3 unique routes
Beck's→I65.8
Céstan (-Raymond)→I65.8
Raymond (-Céstan)→I65.8

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 061
Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with MCC
DRG 062
Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with CC
DRG 063
Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent without CC/MCC
DRG 067
Precerebral Occlusion without Infarction with MCC
DRG 068
Precerebral Occlusion without Infarction without MCC

Cross Reference

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