ICD-10 Code I68 – Cerebrovascular disorders in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I68 – Cerebrovascular disorders in diseases classified elsewhere
What it is
I68 identifies cerebrovascular disorders that are caused by another underlying disease. Use it when the brain blood vessel problem is secondary to a separate condition, not a primary stroke diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Findings may include neurologic deficits, imaging evidence of cerebrovascular involvement, or provider-documented vascular changes linked to another disease.
When to use this code
Use I68 when the record states a cerebrovascular disorder is due to another classified disease and the underlying condition is documented. It applies to secondary vascular involvement, not isolated cerebrovascular disease. Check the note for the causal condition and code that disease first when required.
Do not use for
Do not use I68 for primary cerebrovascular conditions such as stroke or transient ischemic attack. Do not use it when the chart does not clearly link the vascular disorder to another disease.
Coding tip
Always identify the underlying disease in the documentation and code it with the secondary cerebrovascular disorder.