Chronic migraine w/o aura, not intractable, w stat migr

This code describes a persistent, severe migraine attack lasting 72 hours or more, occurring in a patient with a history of chronic migraine (15 or more headache days per month for over 3 months) who typically experiences migraines without an aura. The condition is not responding to typical acute treatments but is not considered refractory to all available therapies.

Use this code when documentation clearly indicates a patient with a pre-existing diagnosis of chronic migraine without aura is experiencing a prolonged, debilitating migraine episode meeting the criteria for status migrainosus. The physician's notes should specify the duration of the current migraine attack and confirm that it is not intractable.

• Ensure the documentation explicitly states "chronic migraine" and "status migrainosus."
• Verify the absence of aura is documented for the typical migraine pattern.
• Do not use this code if the migraine is described as "intractable" or "refractory," as separate codes exist for those scenarios.