ICD-10 Code G43.901 – Migraine, unspecified, not intractable, with status migrainosus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.901 – Migraine, unspecified, not intractable, with status migrainosus
What it is
This code identifies a migraine headache that is not described as intractable and is complicated by status migrainosus, meaning a prolonged migraine attack. Use it when the record confirms migraine without a more specific subtype.
Clinical signs
Clinical features vary; refer to documentation. Typical migraine findings include recurrent headache with associated nausea, vomiting, photophobia, or phonophobia, and status migrainosus indicates an attack lasting longer than usual and causing significant disability.
When to use this code
Use this code when the provider documents migraine, unspecified, and also states status migrainosus. It is appropriate when the chart does not identify migraine type, such as with aura or without aura, but does support the prolonged migraine episode. Check documentation if intractable is mentioned elsewhere.
Do not use for
Do not use this code if the migraine is documented as intractable, because that requires a different code. Also avoid it when the headache is better classified as another headache disorder or when status migrainosus is not documented.
Coding tip
Code the highest level of specificity available, and confirm both “unspecified” migraine and “status migrainosus” are clearly documented before assigning G43.901.