ICD-10 Code G43.811 – Other migraine, intractable, with status migrainosus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.811 – Other migraine, intractable, with status migrainosus
What it is
This code describes a migraine that does not respond well to treatment and is prolonged enough to meet status migrainosus criteria. Use it when the record identifies a migraine type not otherwise classified, plus intractability.
Clinical signs
Typical findings include a severe migraine attack lasting longer than usual and persisting despite usual therapy. Clinical features vary; refer to documentation for the migraine subtype, duration, and whether the episode is documented as status migrainosus.
When to use this code
Use G43.811 when the provider documents an “other” migraine diagnosis, notes that it is intractable, and states status migrainosus. You should also use it when the chart clearly supports prolonged migraine refractory to treatment and no more specific migraine code applies.
Do not use for
Do not use this code if the migraine is not documented as intractable or if status migrainosus is not stated. Check documentation if the record instead identifies a more specific migraine type or a headache condition that is not migraine.
Coding tip
Verify all three elements in the note: migraine type, intractability, and status migrainosus; missing one element may require another code.