ICD-10 Code I67.858 – Other hereditary cerebrovascular disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I67.858 – Other hereditary cerebrovascular disease
What it is
This code identifies a hereditary disorder affecting the brain’s blood vessels. It is used when the cerebrovascular condition is known to be inherited but does not fit a more specific listed diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Findings may include recurrent neurologic symptoms, stroke, transient ischemic attacks, or imaging evidence of abnormal cerebral vessels in a hereditary pattern.
When to use this code
Use this code when the provider documents a hereditary cerebrovascular disease and no more specific ICD-10-CM code applies. It is appropriate for confirmed inherited vascular brain disorders, including cases described as “other” or unspecified within a hereditary category. Check documentation for the exact diagnosis.
Do not use for
Do not use this code for nonhereditary cerebrovascular disease, such as routine stroke or acquired vascular disease. If the record names a specific inherited disorder, code that condition instead.
Coding tip
Code from the provider’s documented hereditary diagnosis; if the inherited nature is not stated, do not assume it.