ICD-10 Code G43.51 – Persistent migraine aura without cerebral infarction, intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.51 – Persistent migraine aura without cerebral infarction, intractable
What it is
This code identifies a migraine aura that continues after the headache phase and is not caused by a cerebral infarction. The intractable qualifier means the condition is difficult to control or does not respond as expected.
Clinical signs
Clinical features vary; refer to documentation. Typical aura findings may include visual, sensory, or speech-related neurologic symptoms that persist beyond the usual migraine pattern, without evidence of stroke.
When to use this code
Use this code when the record clearly states persistent migraine aura and specifies that no cerebral infarction occurred. It is appropriate when the provider documents the condition as intractable or refractory. Check documentation if the note only mentions migraine aura without duration or persistence.
Do not use for
Do not use this code for migraine aura with cerebral infarction, since that is a different diagnosis. Avoid it when the chart describes a routine migraine aura, a stroke, or another neurologic disorder instead.
Coding tip
Code only when the provider documents persistence and confirms absence of cerebral infarction.