ICD-10 Code I69.843 – Monoplegia of lower limb following other cerebrovascular disease affecting right non-dominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.843 – Monoplegia of lower limb following other cerebrovascular disease affecting right non-dominant side
What it is
This code identifies paralysis limited to one lower limb on the right, in a patient with residual deficits after a cerebrovascular disease other than stroke. The right side is documented as the non-dominant side.
Clinical signs
Expect weakness or loss of voluntary movement in the right leg only, with preserved function in other limbs. Clinical features vary; refer to documentation for the underlying cerebrovascular history and laterality.
When to use this code
Use I69.843 when the record clearly states monoplegia of the right lower limb as a sequela of another cerebrovascular disease. The documentation should also specify that the affected side is non-dominant. Apply it for residual deficits, not for the acute cerebrovascular event itself.
Do not use for
Do not use this code for acute stroke, transient symptoms, or weakness without documented monoplegia. Check documentation if the affected limb, dominance, or cerebrovascular cause is unclear.
Coding tip
Verify both the residual paralysis and the non-dominant side before assigning I69.843.