ICD-10 Code I69.359 – Hemiplegia and hemiparesis following cerebral infarction affecting unspecified side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.359 – Hemiplegia and hemiparesis following cerebral infarction affecting unspecified side
What it is
I69.359 identifies residual hemiplegia or hemiparesis after a prior cerebral infarction when the affected side is not documented. Use it for ongoing weakness or paralysis that remains after the stroke phase.
Clinical signs
Typical findings include unilateral weakness, reduced motor control, abnormal gait, and decreased functional use of one side. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record states hemiplegia or hemiparesis is due to a previous cerebral infarction and laterality is not specified. It applies to sequelae, not the acute stroke event. Confirm that the provider links the deficit to the infarction.
Do not use for
Do not use this code for an acute ischemic stroke, transient weakness, or hemiplegia from another cause. If the documentation identifies the affected side, choose the more specific post-stroke code.
Coding tip
Check for “late effect,” “residual,” or “following infarction” wording and verify whether laterality is documented.