ICD-10 Code I69.93 – Monoplegia of upper limb following unspecified cerebrovascular disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I69.93 – Monoplegia of upper limb following unspecified cerebrovascular disease
What it is
This code identifies one-sided paralysis affecting an arm after a cerebrovascular disease, when the specific type of stroke or other vascular event is not documented. It is a late effect code, so you use it for residual weakness or paralysis after the acute event has passed.
Clinical signs
Typical findings include persistent loss of voluntary movement in one upper limb, with marked weakness or complete paralysis. Clinical features vary; refer to documentation for laterality, severity, and whether the deficit is residual from a prior cerebrovascular event.
When to use this code
Use I69.93 when the record clearly links current upper-limb monoplegia to a previous cerebrovascular disease, but the exact cerebrovascular diagnosis is not specified. You may see this in follow-up, rehabilitation, or chronic care notes describing ongoing arm paralysis after stroke-like illness.
Document the residual deficit and the prior cerebrovascular history when available. If the source event is documented more specifically, code the more precise I69 category instead.
Do not use for
Do not use this code for acute stroke, transient symptoms, or arm weakness without documented residual monoplegia. Check documentation if the condition is due to trauma, peripheral nerve disease, or another non-cerebrovascular cause.
Coding tip
Always verify that the arm paralysis is a residual effect of prior cerebrovascular disease, not an active neurologic event.