ICD-10 Code I69.041 – Monoplegia of Lower Limb Following Nontraumatic Subarachnoid Hemorrhage Affecting Right Dominant Side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.041 – Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage affecting right dominant side
What it is
This code identifies persistent paralysis or severe weakness affecting one lower limb after a nontraumatic subarachnoid hemorrhage. It also specifies the right side and that the patient is dominant-side affected.
Clinical signs
Typical findings include marked loss of voluntary movement in one leg, often with weakness, abnormal gait, or inability to bear weight. Clinical features vary; refer to documentation.
When to use this code
Use I69.041 when the record clearly states monoplegia of the right lower limb as a late effect of a nontraumatic subarachnoid hemorrhage. The condition should be documented as residual, sequela, or post-stroke deficit rather than an acute event. Confirm the dominant side when it is specified.
Do not use for
Do not use this code for acute subarachnoid hemorrhage, transient weakness, or paralysis from trauma. Check documentation if the record does not link the monoplegia to the prior hemorrhage.
Coding tip
Sequence the residual neurologic deficit code only when the sequela is documented and the cause is clearly stated.