Hemiplegic migraine, intractable, with status migrainosus

This code describes a severe and persistent form of migraine characterized by temporary paralysis or weakness on one side of the body (hemiplegia). The condition is considered intractable, meaning it is resistant to standard treatment, and has progressed to status migrainosus, indicating a debilitating migraine attack lasting 72 hours or more.

Use this code when documentation clearly indicates a diagnosis of hemiplegic migraine that is refractory to treatment. The patient must also be experiencing status migrainosus, which is a prolonged and severe migraine episode. Documentation should specify both the intractable nature and the status migrainosus component.

• Ensure documentation explicitly states "intractable" and "status migrainosus" in addition to "hemiplegic migraine."
• Do not use this code for hemiplegic migraine that is not intractable or not in status migrainosus; separate codes exist for those presentations.
• Consider sequencing this code as the primary diagnosis if it is the main reason for the encounter, especially in inpatient settings for acute management.