ICD-10 Code I69.043 – Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage affecting right non-dominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.043 – Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage affecting right non-dominant side
What it is
This code identifies persistent paralysis or severe weakness limited to one lower limb after a nontraumatic subarachnoid hemorrhage. It also specifies the right side in a patient whose right side is non-dominant.
Clinical signs
Look for unilateral lower-leg or leg weakness, reduced movement, and impaired walking after documented subarachnoid hemorrhage. Clinical features vary; refer to documentation.
When to use this code
Use I69.043 when the record clearly links the monoplegia to a prior nontraumatic subarachnoid hemorrhage and identifies the affected side as right non-dominant. It is appropriate for residual deficits at follow-up or ongoing care. Check documentation if dominance or laterality is unclear.
Do not use for
Do not use this code for acute hemorrhage, transient weakness, or paralysis from trauma or another neurologic cause. Do not use it if the residual deficit is not documented as monoplegia of the lower limb.
Coding tip
Verify both the stroke type and the residual deficit before coding, and confirm right-side non-dominance in the chart.