I66.2
Occlusion and stenosis of posterior cerebral artery
- Release
- FY 2027
- Effective
Hierarchy
Where I66.2 sits in the official hierarchy. Each level is the code it is classified under.
- I66 Parent Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
- I66.2 This code Occlusion and stenosis of posterior cerebral artery
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Includes
embolism of cerebral artery
Inherited from I66 — Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Includes
narrowing of cerebral artery
Inherited from I66 — Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Includes
obstruction (complete) (partial) of cerebral artery
Inherited from I66 — Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Includes
thrombosis of cerebral artery
Inherited from I66 — Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
Excludes1
Occlusion and stenosis of cerebral artery causing cerebral infarction (I63.3-I63.5)
Inherited from I66 — Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
More Specific Codes
4 codes under I66.2
- I66.21 Occlusion and stenosis of right posterior cerebral artery Billable
- I66.22 Occlusion and stenosis of left posterior cerebral artery Billable
- I66.23 Occlusion and stenosis of bilateral posterior cerebral arteries Billable
- I66.29 Occlusion and stenosis of unspecified posterior cerebral artery Billable
Version History
How I66.2 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentOcclusion and stenosis of posterior cerebral artery
-
FY 2026 Effective
UnchangedOcclusion and stenosis of posterior cerebral artery
Related Codes
Other codes under I66
- I66.0 Occlusion and stenosis of middle cerebral artery
- I66.1 Occlusion and stenosis of anterior cerebral artery
- I66.3 Occlusion and stenosis of cerebellar arteries Billable
- I66.8 Occlusion and stenosis of other cerebral arteries Billable
- I66.9 Occlusion and stenosis of unspecified cerebral artery Billable
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
MedCodeSearch is an independent reference service and is not affiliated with CMS, CDC, or the U.S. government.
Look up another code
Search ICD-10-CM, ICD-10-PCS and HCPCS Level II by code or description.