The ICD-9 code range OTHER HEADACHE SYNDROMES ) for 339-339 is medical classification list by the World Health Organization (WHO).
Other headache syndromes
Other headache syndromes : Cluster headaches and other trigeminal autonomic cephalgias
Cluster headache syndrome, unspecified
Episodic cluster headache
Chronic cluster headache
Episodic paroxysmal hemicrania
Chronic paroxysmal hemicrania
Short lasting unilateral neuralgiform headache with conjunctival injection and tearing
Other trigeminal autonomic cephalgias
Other headache syndromes : Tension type headache
Other headache syndromes : Post-traumatic headache
Complicated headache syndromes