ICD-10 Code I69.820 – Aphasia following other cerebrovascular disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.820 – Aphasia following other cerebrovascular disease
What it is
I69.820 identifies aphasia that remains after a cerebrovascular disease event other than stroke. Use it when the record links the language deficit to a prior vascular brain injury.
Clinical signs
Patients may have impaired speech production, word-finding difficulty, or reduced language comprehension. Clinical features vary; refer to documentation for the specific aphasia pattern and its relationship to the prior cerebrovascular condition.
When to use this code
Use this code when the provider documents aphasia as a late effect of an earlier cerebrovascular disease and the condition is still present. The record should show a causal link to the prior vascular event, not just a history of it. If the note only says “aphasia” without that connection, check documentation.
Do not use for
Do not use it for aphasia caused by trauma, tumor, degenerative disease, or an acute cerebrovascular event. Do not assign it when the aphasia is unrelated to the documented cerebrovascular disease.
Coding tip
Code the residual aphasia with the appropriate late-effect code only when the provider clearly documents the residual condition and its vascular cause.