ICD-10 Code I69.031 – Monoplegia of Upper Limb Following Nontraumatic Subarachnoid Hemorrhage Affecting Right Dominant Side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.031 – Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting right dominant side
What it is
This code reports a one-sided paralysis or severe weakness of the upper limb that remains after a nontraumatic subarachnoid hemorrhage. It specifies the right side and the dominant side.
Clinical signs
Typical findings include marked loss of voluntary movement in the affected arm, with weakness or paralysis documented after the hemorrhagic event. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly links the upper-limb monoplegia to a prior nontraumatic subarachnoid hemorrhage. The documentation should identify the right dominant arm as the affected side. If the laterality, dominance, or cause is unclear, check documentation before coding.
Do not use for
Do not use this code for weakness not attributed to a prior subarachnoid hemorrhage, or for trauma-related paralysis. It is also incorrect if the affected side or dominant status is not documented.
Coding tip
Verify the residual deficit and the exact side from the provider’s note before assigning I69.031.