G44 | Other headache syndromes |
| Cluster headaches and other trigeminal autonomic cephalgias (TAC) |
| Cluster headache syndrome, unspecified |
| Cluster headache syndrome, unspecified, intractable |
| Cluster headache syndrome, unspecified, not intractable |
| Episodic cluster headache |
| Episodic cluster headache, intractable |
| Episodic cluster headache, not intractable |
| Chronic cluster headache |
| Chronic cluster headache, intractable |
| Chronic cluster headache, not intractable |
| Episodic paroxysmal hemicrania |
| Episodic paroxysmal hemicrania, intractable |
| Episodic paroxysmal hemicrania, not intractable |
| Chronic paroxysmal hemicrania |
| Chronic paroxysmal hemicrania, intractable |
| Chronic paroxysmal hemicrania, not intractable |
| Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) |
| Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable |
| Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable |
| Other trigeminal autonomic cephalgias (TAC) |
| Other trigeminal autonomic cephalgias (TAC), intractable |
| Other trigeminal autonomic cephalgias (TAC), not intractable |
| Vascular headache, not elsewhere classified |
| Tension-type headache |
| Tension-type headache, unspecified |
| Tension-type headache, unspecified, intractable |
| Tension-type headache, unspecified, not intractable |
| Episodic tension-type headache |
| Episodic tension-type headache, intractable |
| Episodic tension-type headache, not intractable |
| Chronic tension-type headache |
| Chronic tension-type headache, intractable |
| Chronic tension-type headache, not intractable |
| Post-traumatic headache |
| Post-traumatic headache, unspecified |
| Post-traumatic headache, unspecified, intractable |
| Post-traumatic headache, unspecified, not intractable |
| Acute post-traumatic headache |
| Acute post-traumatic headache, intractable |
| Acute post-traumatic headache, not intractable |
| Chronic post-traumatic headache |
| Chronic post-traumatic headache, intractable |
| Chronic post-traumatic headache, not intractable |
| Drug-induced headache, not elsewhere classified |
| Drug-induced headache, not elsewhere classified, not intractable |
| Drug-induced headache, not elsewhere classified, intractable |
| Complicated headache syndromes |
| Hemicrania continua |
| New daily persistent headache (NDPH) |
| Primary thunderclap headache |
| Other complicated headache syndrome |
| Other specified headache syndromes |
| Hypnic headache |
| Headache associated with sexual activity |
| Primary cough headache |
| Primary exertional headache |
| Primary stabbing headache |
| Cervicogenic headache |
| Other headache syndrome |