ICD-10 Code G43.00 – Migraine without aura, not intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.00 – Migraine without aura, not intractable
What it is
This code identifies migraine headaches that occur without aura and are not described as intractable. Use it when the record supports migraine but does not document aura or refractory disease.
Clinical signs
Typical migraine features include recurrent headache episodes, often unilateral or throbbing, with nausea, vomiting, or sensitivity to light and sound. Clinical features vary; refer to documentation.
When to use this code
Use G43.00 when the provider documents migraine without aura and indicates it is not intractable. It also fits when the note clearly supports migraine but does not mention status migrainosus or chronic refractory symptoms. Check documentation if laterality, frequency, or severity is unclear.
Do not use for
Do not use this code for migraine with aura, intractable migraine, or status migrainosus. If the chart only says headache without a migraine diagnosis, this code is not appropriate.
Coding tip
Confirm that “without aura” and “not intractable” are both documented before assigning G43.00.