I65.02 ICD-10-CM Code: Occlusion and stenosis of left vertebral artery
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 061 — ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WITH MCC (MDC 01)
- MS-DRG 062 — ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WITH CC (MDC 01)
- MS-DRG 063 — ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WITHOUT CC/MCC (MDC 01)
- MS-DRG 067 — PRECEREBRAL OCCLUSION WITHOUT INFARCTION WITH MCC (MDC 01)
- MS-DRG 068 — PRECEREBRAL OCCLUSION WITHOUT INFARCTION WITHOUT MCC (MDC 01)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I65.02 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- embolism of precerebral artery
- narrowing of precerebral artery
- obstruction (complete) (partial) of precerebral artery
- thrombosis of precerebral artery
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- insufficiency, NOS, of precerebral artery (G45.-)
- insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2)
- traumatic intracranial hemorrhage (S06.-)
Use Additional Code
Supplementary codes the tabular list directs you to add.
- Use additional code to identify presence of:
- alcohol abuse and dependence (F10.-)
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- hypertension (I10-I1A)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Nearest Codes in This Family
Official ICD-10-CM classifications closest to I65.02 in its code family, with their registry titles.
- I65 — Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
- I65.0 — Occlusion and stenosis of vertebral artery
- I65.01 — Occlusion and stenosis of right 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