ICD-10 Code I69.859 – Hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.859 – Hemiplegia and hemiparesis following other cerebrovascular disease affecting unspecified side
What it is
This code identifies lasting weakness or paralysis on one side of the body after a non-stroke cerebrovascular condition. Use it when the side affected is not documented.
Clinical signs
Patients may have unilateral arm or leg weakness, reduced coordination, or impaired gait after a prior cerebrovascular event. Clinical features vary; refer to documentation.
When to use this code
Use I69.859 when the record links hemiplegia or hemiparesis to a previous cerebrovascular disease and the affected side is not specified. It fits sequelae, not the acute event itself. Confirm the provider documents a residual motor deficit after the earlier condition.
Do not use for
Do not use this code for acute stroke, transient neurologic symptoms, or weakness without a documented cerebrovascular cause. Check documentation if the residual deficit is due to trauma, spinal disease, or another neurologic disorder.
Coding tip
Code the residual deficit first, and add the original cerebrovascular condition only if the record supports it.