All ICD10 Codes

I66.2

Non-Billable
ChapterI00–I99
Ranksubcategory
Official Description

Occlusion and stenosis of posterior cerebral artery

Use a more specific code (4 billable)
I66.21Occlusion and stenosis of right posterior cerebral arteryI66.22Occlusion and stenosis of left posterior cerebral arteryI66.23Occlusion and stenosis of bilateral posterior cerebral arteriesI66.29Occlusion and stenosis of unspecified posterior cerebral artery
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).
General instructions are available for the parent sections:
View CH9 NotesView I60-I69 NotesView I66 Notes

Clinical Hierarchy

BillableHas subcodes
CH9Diseases of the circulatory system (I00-I99)
I60-I69Cerebrovascular diseases (I60-I69)
I66Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
I66.2Occlusion and stenosis of posterior cerebral arteryNot billable
I66.21Occlusion and stenosis of right posterior cerebral arteryBillable
I66.22Occlusion and stenosis of left posterior cerebral arteryBillable
I66.23Occlusion and stenosis of bilateral posterior cerebral arteriesBillable
I66.29Occlusion and stenosis of unspecified posterior cerebral arteryBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I66.2:

categoryI66
Occlusion and stenosis of cerebral 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

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Occlusion and stenosis of posterior cerebral artery.

Search PCS Codes