ICD-10 Code I69.91 – Cognitive deficits following unspecified cerebrovascular disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.91 – Cognitive deficits following unspecified cerebrovascular disease
What it is
This code identifies persistent cognitive problems that follow a cerebrovascular disease when the exact type is not specified. It is used for after-effects, not the acute stroke or vascular event itself.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include impaired memory, attention, or executive function after a cerebrovascular event, with deficits documented as lasting beyond the acute phase.
When to use this code
Use I69.91 when the record clearly links cognitive deficits to a prior unspecified cerebrovascular disease and the patient is being seen for the residual condition. Code the lingering deficit, not the original event, unless both are documented and separately reportable.
If the chart only says “history of stroke” without current cognitive impairment, this code is not appropriate. Check documentation for the specific vascular diagnosis and whether the deficit is a sequela.
Do not use for
Do not use this code for acute cerebrovascular disease, transient symptoms without residual deficit, or cognitive disorders unrelated to a vascular cause. Check documentation when the cause is unclear.
Coding tip
Confirm both the residual cognitive deficit and the prior cerebrovascular condition are documented before assigning this sequela code.