G44.021 Chronic cluster headache, intractable
ICD-10-CM · CMS code reference
Official ICD-10-CM description: Chronic cluster headache, intractable
Related codes
G44.001Cluster headache syndrome, unspecified, intractable ICD-10-CMG44.009Cluster headache syndrome, unspecified, not intractable ICD-10-CMG44.011Episodic cluster headache, intractable ICD-10-CMG44.019Episodic cluster headache, not intractable ICD-10-CMG44.029Chronic cluster headache, not intractable ICD-10-CMG44.031Episodic paroxysmal hemicrania, intractable ICD-10-CMG44.039Episodic paroxysmal hemicrania, not intractable ICD-10-CMG44.041Chronic paroxysmal hemicrania, intractable ICD-10-CM
Common questions
Is G44.021 a billable code?
Yes. G44.021 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.