ICD-10 Code G43.509 – Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.509 – Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus
What it is
This code identifies a migraine aura that continues after the usual headache phase and is not caused by a cerebral infarction. It applies when the migraine is documented as not intractable and without status migrainosus.
Clinical signs
Clinical features vary; refer to documentation. Typical aura findings may include visual, sensory, or speech symptoms that persist longer than expected, with no evidence of stroke or infarction.
When to use this code
Use this code when the provider documents persistent migraine aura and clearly states there is no cerebral infarction. It also requires documentation that the migraine is not intractable and is not status migrainosus. Check the note for those qualifiers before assigning G43.509.
Do not use for
Do not use this code if the record shows cerebral infarction, intractable migraine, or status migrainosus. If the documentation is unclear about persistence or the absence of infarction, check documentation.
Coding tip
Verify all three elements: persistent aura, no infarction, and the correct migraine qualifiers.