G44.0 - Cluster headaches and other trigeminal autonomic cephalgias (TAC)
G44.03 - Episodic paroxysmal hemicrania
InclusionTerm:
-Paroxysmal hemicrania NOS
G44.031 - Episodic paroxysmal hemicrania, intractable
G44.039 - Episodic paroxysmal hemicrania, not intractable