ICD-10 Code G43.01 – Migraine without aura, intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.01 – Migraine without aura, intractable
What it is
G43.01 identifies migraine without aura that is intractable, meaning the headaches are difficult to control or do not respond well to usual management. You should use it when the record clearly states this migraine type.
Clinical signs
Typical migraine features include recurrent headache episodes, often with nausea, vomiting, and sensitivity to light or sound. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents migraine without aura and also describes it as intractable, refractory, or poorly controlled. It may also apply when the note states the migraine is not responding to standard therapy. Check documentation if the chart does not clearly link both elements.
Do not use for
Do not use G43.01 for migraine with aura, status migrainosus, or unspecified migraine. Do not assign it if intractable is not documented.
Coding tip
Capture both the migraine subtype and the intractable status from the provider’s wording before coding.