ICD-10 Code I69.034 – Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting left non-dominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.034 – Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting left non-dominant side
What it is
This code identifies weakness or paralysis limited to one upper limb as a late effect of a nontraumatic subarachnoid hemorrhage. It specifies the left, non-dominant side.
Clinical signs
Typical documentation includes persistent loss of motor function in one arm after a prior subarachnoid hemorrhage. Clinical features vary; refer to documentation for laterality, dominance, and severity.
When to use this code
Use I69.034 when the record clearly links the arm monoplegia to a previous nontraumatic subarachnoid hemorrhage. You should code the residual neurologic deficit, not the acute bleed, when the hemorrhage is no longer active. Confirm that the affected side is left and non-dominant.
Do not use for
Do not use this code for acute subarachnoid hemorrhage or for arm weakness from trauma, stroke of another type, or an unspecified neurologic cause. Check documentation if laterality or dominance is not stated.
Coding tip
Link the residual monoplegia to the prior hemorrhage in the note before assigning this code.