I65 is the authoritative medical code for Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction. This classification is used in medical billing and clinical recording to specify the clinical criteria for occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction (ICD-10-CM I65), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction is a non-billable ICD-10-CM category code I65. A more specific billable subcode must be selected for claims submission. Includes: 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; traumatic intracranial hemorrhage S06.-. Use additional code: 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.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I65 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.
- 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
Frequently Asked Questions (FAQ) & Clinical Guidance
Can I65 be billed directly?
No. I65 (Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with I65?
Per official ICD-10-CM Excludes1 instructions, I65 must not be reported together with: insufficiency, NOS, of precerebral artery (G45.-); insufficiency of precerebral arteries causing cerebral infarction (I63.0-I63.2); traumatic intracranial hemorrhage (S06.-).
Is an additional code needed with I65?
Use additional code(s) to specify: code to identify presence of:; alcohol abuse and dependence (F10.-); exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to I65 in its code family, with their registry titles.
- 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