ICD-10 Code I69.341 – Monoplegia of lower limb following cerebral infarction affecting right dominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.341 – Monoplegia of lower limb following cerebral infarction affecting right dominant side
What it is
I69.341 identifies monoplegia, or paralysis affecting one lower limb, that results from a prior cerebral infarction. The code also specifies the right dominant side, so you should use it only when laterality and dominance are documented.
Clinical signs
Typical findings include persistent weakness or paralysis limited to one leg after a stroke. Clinical features vary; refer to documentation for whether the deficit is complete, partial, or described as residual hemiplegic impairment.
When to use this code
Use this code when the record clearly links the leg paralysis to a past cerebral infarction and identifies the right dominant lower limb. It is appropriate for residual deficits documented during follow-up, rehabilitation, or chronic stroke care. Check documentation if the cause, side, or dominance is unclear.
Do not use for
Do not use it for acute stroke, transient weakness, or lower-limb paralysis from another cause. Do not assign it if the chart does not confirm cerebral infarction or if the affected side and dominance are not documented.
Coding tip
Verify that the provider documents both the old infarction and the residual right-sided dominant-leg monoplegia before coding.