ICD-10 Code I69.334 – Monoplegia of upper limb following cerebral infarction affecting left non-dominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.334 – Monoplegia of upper limb following cerebral infarction affecting left non-dominant side
What it is
This code identifies paralysis limited to one upper limb that remains after a cerebral infarction, or ischemic stroke. It specifies the left, non-dominant side, so you should confirm laterality and dominance in the record.
Clinical signs
Typical findings include marked weakness or complete loss of voluntary movement in the affected arm after a documented stroke. Clinical features vary; refer to documentation for residual neurologic deficits and functional impairment.
When to use this code
Use I69.334 when the provider documents monoplegia of the upper limb as a late effect of prior cerebral infarction, not an acute stroke. The record should support the left non-dominant side and the residual nature of the deficit. If dominance is unclear, check documentation.
Do not use for
Do not use this code for acute cerebral infarction, generalized hemiplegia, or arm weakness without a documented stroke sequela. If the paralysis is due to another neurologic cause, choose the condition-specific code.
Coding tip
Code the residual deficit first, and verify that the infarction is historical rather than current.