Chronic migraine w/o aura, intractable, w status migrainosus

This code signifies a persistent, severe headache disorder characterized by chronic migraine without an accompanying aura, which has proven resistant to standard treatments. The "intractable" component indicates the condition is difficult to manage, while "status migrainosus" denotes a debilitating migraine attack lasting 72 hours or longer.

Apply this code when a patient presents with a documented history of chronic migraine (15 or more headache days per month for over 3 months) that lacks aura symptoms. Crucially, the medical record must explicitly state that the migraine is intractable to therapy and that the patient is currently experiencing status migrainosus.

• Ensure documentation clearly distinguishes between chronic migraine and episodic migraine.
• Verify the "intractable" and "status migrainosus" components are explicitly stated by the provider.
• Do not use this code if an aura is present; instead, refer to codes within the G43.70- or G43.72- series.