G44: Other headache syndromes
G44.0: Cluster headaches and other trigeminal autonomic cephalgias (TAC)
G44.00: Cluster headache syndrome, unspecified
G44.01: Episodic cluster headache
G44.02: Chronic cluster headache
G44.03: Episodic paroxysmal hemicrania
G44.04: Chronic paroxysmal hemicrania
G44.05: Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)
G44.09: Other trigeminal autonomic cephalgias (TAC)
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