ICD-10 Code I69.03 – Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.03 – Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage
What it is
This code identifies upper-limb monoplegia that remains after a nontraumatic subarachnoid hemorrhage. Use it when the paralysis is a late effect of the hemorrhage, not an active bleed.
Clinical signs
Typical findings include marked weakness or paralysis limited to one arm, often with reduced voluntary movement and impaired function. Clinical features vary; refer to documentation.
When to use this code
Use I69.03 when the record clearly links the current upper-limb monoplegia to a prior nontraumatic subarachnoid hemorrhage. The hemorrhage should be documented as past history or sequela, with the arm deficit described as residual. If the relationship is not stated, check documentation before assigning this code.
Do not use for
Do not use this code for active subarachnoid hemorrhage, traumatic intracranial bleeding, or monoplegia from another cause. Do not use if the affected limb or stroke type is not documented.
Coding tip
Verify both the residual deficit and the nontraumatic subarachnoid hemorrhage etiology in the note before coding.