ICD-10 Code I69.931 – Monoplegia of upper limb following unspecified cerebrovascular disease affecting right dominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.931 – Monoplegia of upper limb following unspecified cerebrovascular disease affecting right dominant side
What it is
This code identifies persistent paralysis of one upper limb after an unspecified cerebrovascular disease, with the right side affected in a dominant patient. Use it when the weakness is a late effect of stroke or another cerebrovascular event.
Clinical signs
Typical findings include marked loss of voluntary movement in one arm, reduced strength, and impaired function after a prior cerebrovascular event. Clinical features vary; refer to documentation for laterality, dominance, and whether the deficit is residual.
When to use this code
Use I69.931 when the record clearly links the upper-limb monoplegia to a previous unspecified cerebrovascular disease and specifies the right dominant side. Code the residual deficit, not the acute stroke, when the patient is in the recovery or chronic phase. Check documentation if the side, dominance, or cause is unclear.
Do not use for
Do not use this code for acute cerebrovascular events or for arm weakness without a documented cerebrovascular cause. It is also incorrect if the affected side or dominant status is not documented.
Coding tip
Verify that the provider documents both the residual monoplegia and the exact post-cerebrovascular relationship before assigning this code.