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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
- Code first (T36-T50) to identify drug
- 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
- 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
- G44.89 Other headache syndrome
- Excludes1: neonatal cerebral ischemia (P91.0)
- transient retinal artery occlusion (H34.0-)
- G45.0 Vertebro-basilar artery syndrome
- G45.1 Carotid artery syndrome (hemispheric)
- G45.2 Multiple and bilateral precerebral artery syndromes
- G45.3 Amaurosis fugax
- G45.4 Transient global amnesia
- Excludes1: amnesia NOS (R41.3)
- G45.8 Other transient cerebral ischemic attacks and related syndromes
- G45.9 Transient cerebral ischemic attack, unspecified
- Spasm
