Hemiplegic migraine, not intractable, w/o status migrainosus

This code describes a type of migraine headache characterized by temporary weakness or paralysis on one side of the body (hemiplegia) during or after the headache phase. The condition is not resistant to standard treatment and does not involve a prolonged, severe migraine attack lasting more than 72 hours.

Use this code when documentation clearly indicates a diagnosis of hemiplegic migraine where the patient responds to typical migraine therapies and is not experiencing status migrainosus. This applies to both familial and sporadic forms of hemiplegic migraine.

• Ensure documentation specifies "not intractable" and "without status migrainosus" to accurately assign this code.
• Distinguish from other migraine types, especially those with aura, by the presence of motor weakness.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter.