ICD-10 Code I69.818 – Other symptoms and signs involving cognitive functions following other cerebrovascular disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.818 – Other symptoms and signs involving cognitive functions following other cerebrovascular disease
What it is
This code identifies lingering cognitive problems after a cerebrovascular disease that is not a stroke or specified infarction. Use it for documented memory, attention, or thinking deficits that remain after the vascular event.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include impaired memory, slowed processing, poor concentration, or other cognitive changes attributed to prior cerebrovascular disease.
When to use this code
Use I69.818 when the provider documents cognitive symptoms as a late effect of another cerebrovascular condition and the current encounter is for that residual problem. It may apply during follow-up visits, rehabilitation, or ongoing management when the deficit is still present. Code the residual manifestation, not the acute vascular event, unless both are addressed.
Do not use for
Do not use this code for acute stroke, transient ischemic attack, or dementia without a documented cerebrovascular cause. Check documentation if the cognitive issue is unrelated to a prior cerebrovascular disease.
Coding tip
Link the cognitive deficit to the prior cerebrovascular disease in the record before assigning I69.818.