G44.0 is the ICD-10 code for Cluster headache syndrome. It is a four-character subcategory of G44 (Other headache syndromes), the most specific level in the WHO edition. It belongs to the block G40–G47 (Episodic and paroxysmal disorders) in Chapter VI, Diseases of the nervous system.
- Code type
- Subcategory (4 characters)
- Chapter
- VI · G00–G99
- Classification
- WHO ICD-10, 2019 version
What G44.0 includes
Conditions and terms that are coded here.
- Chronic paroxysmal hemicrania
- Cluster headache:
- chronic
- episodic
G44.0 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
G44.0Clusterhodepinesyndrom
DG440Hortons hovedpine
- DG440AEpisodisk klyngehovedpine
- DG440BKronisk paroksysmal hemikrani
G44.0Cluster-päänsärkyoireyhtymä
G44.0Cluster-Kopfschmerz
G44.0Syndrome d'algie vasculaire de la face
G44.0clusterhoofdpijnsyndroom
Listed through more specific codes:
- G44.001Cluster headache syndrome, unspecified, intractable
- G44.009Cluster headache syndrome, unspecified, not intractable
- G44.011Episodic cluster headache, intractable
- G44.019Episodic cluster headache, not intractable
- G44.021Chronic cluster headache, intractable
- G44.029Chronic cluster headache, not intractable
- G44.031Episodic paroxysmal hemicrania, intractable
- G44.039Episodic paroxysmal hemicrania, not intractable
- and 6 more national subcodes
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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