ICD-10-CM Book 2024 Edition

Chapters  /  Chapter 6  /  G40-G47  /  G44
G44 Other headache syndromes
Excludes1 headache NOS (R51.9)
Excludes2 atypical facial pain (G50.1)
headache due to lumbar puncture (G97.1)
migraines (G43.-)
trigeminal neuralgia (G50.0)
G44.0 Cluster headaches and other trigeminal autonomic cephalgias (TAC)
G44.00 Cluster headache syndrome, unspecified
Ciliary neuralgia
Cluster headache NOS
Histamine cephalgia
Lower half migraine
Migrainous neuralgia
G44.001 Cluster headache syndrome, unspecified, intractable
G44.009 Cluster headache syndrome, unspecified, not intractable
Cluster headache syndrome NOS
G44.01 Episodic cluster headache
G44.011 Episodic cluster headache, intractable
G44.019 Episodic cluster headache, not intractable
Episodic cluster headache NOS
G44.02 Chronic cluster headache
G44.021 Chronic cluster headache, intractable
G44.029 Chronic cluster headache, not intractable
Chronic cluster headache NOS
G44.03 Episodic paroxysmal hemicrania
Paroxysmal hemicrania NOS
G44.031 Episodic paroxysmal hemicrania, intractable
G44.039 Episodic paroxysmal hemicrania, not intractable
Episodic paroxysmal hemicrania NOS
G44.04 Chronic paroxysmal hemicrania
G44.041 Chronic paroxysmal hemicrania, intractable
G44.049 Chronic paroxysmal hemicrania, not intractable
Chronic paroxysmal hemicrania NOS
G44.05 Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)
G44.051 Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable
G44.059 Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable
Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) NOS
G44.09 Other trigeminal autonomic cephalgias (TAC)
G44.091 Other trigeminal autonomic cephalgias (TAC), intractable
G44.099 Other trigeminal autonomic cephalgias (TAC), not intractable
G44.1 Vascular headache, not elsewhere classified
Excludes2 cluster headache (G44.0)
complicated headache syndromes (G44.5-)
drug-induced headache (G44.4-)
migraine (G43.-)
other specified headache syndromes (G44.8-)
post-traumatic headache (G44.3-)
tension-type headache (G44.2-)
G44.2 Tension-type headache
G44.20 Tension-type headache, unspecified
G44.201 Tension-type headache, unspecified, intractable
G44.209 Tension-type headache, unspecified, not intractable
Tension headache NOS
G44.21 Episodic tension-type headache
G44.211 Episodic tension-type headache, intractable
G44.219 Episodic tension-type headache, not intractable
Episodic tension-type headache NOS
G44.22 Chronic tension-type headache
G44.221 Chronic tension-type headache, intractable
G44.229 Chronic tension-type headache, not intractable
Chronic tension-type headache NOS
G44.3 Post-traumatic headache
G44.30 Post-traumatic headache, unspecified
G44.301 Post-traumatic headache, unspecified, intractable
G44.309 Post-traumatic headache, unspecified, not intractable
Post-traumatic headache NOS
G44.31 Acute post-traumatic headache
G44.311 Acute post-traumatic headache, intractable
G44.319 Acute post-traumatic headache, not intractable
Acute post-traumatic headache NOS
G44.32 Chronic post-traumatic headache
G44.321 Chronic post-traumatic headache, intractable
G44.329 Chronic post-traumatic headache, not intractable
Chronic post-traumatic headache NOS
G44.4 Drug-induced headache, not elsewhere classified
Medication overuse headache
UseAdditionalCode code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
G44.40 Drug-induced headache, not elsewhere classified, not intractable
G44.41 Drug-induced headache, not elsewhere classified, intractable
G44.5 Complicated headache syndromes
G44.51 Hemicrania continua
G44.52 New daily persistent headache (NDPH)
G44.53 Primary thunderclap headache
G44.59 Other complicated headache syndrome
G44.8 Other specified headache syndromes
Excludes2 headache with orthostatic or positional component, not elsewhere classified (R51.0)
G44.81 Hypnic headache
G44.82 Headache associated with sexual activity
Orgasmic headache
Preorgasmic headache
G44.83 Primary cough headache
G44.84 Primary exertional headache
G44.85 Primary stabbing headache
G44.86 Cervicogenic headache
CodeAlso associated cervical spinal condition, if known
G44.89 Other headache syndrome