G43.7 - Chronic migraine without aura
G43.71 - Chronic migraine without aura, intractable
InclusionTerm:
-Chronic migraine without aura, with refractory migraine
G43.711 - Chronic migraine without aura, intractable, with status migrainosus
G43.719 - Chronic migraine without aura, intractable, without status migrainosus