ICD-10 Code I69.939 – Monoplegia of Upper Limb Following Unspecified Cerebrovascular Disease Affecting Unspecified Side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.939 – Monoplegia of upper limb following unspecified cerebrovascular disease affecting unspecified side
What it is
This code identifies paralysis or severe weakness limited to one upper limb after a prior cerebrovascular disease, when the side is not documented. Use it for a residual neurologic deficit, not for the acute stroke event.
Clinical signs
Typical findings include loss of voluntary movement, marked weakness, or poor control in one arm. Clinical features vary; refer to documentation for the affected side and whether the deficit is complete or partial.
When to use this code
Use this code when the record states monoplegia of an upper limb as a late effect of a prior cerebrovascular disease and the affected side is unspecified. It is appropriate when the stroke is no longer acute and the residual arm deficit remains documented. If the provider does not link the paralysis to cerebrovascular disease, check documentation.
Do not use for
Do not use this code for acute stroke, transient weakness, or generalized hemiplegia affecting both arm and leg. Do not use it when the residual deficit is on a documented side that requires a more specific code.
Coding tip
Look for explicit documentation of a cerebrovascular sequela and confirm that the upper-limb monoplegia is the residual condition being coded.