ICD 10 CM Codes

G44.021 Chronic cluster headache, intractable
Billable Code  is a billable ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
GEMS
ICD-10-CM G44.021 converts approximately to:ICD-9-CM
2018 ICD-9-CM 339.02 Chronic cluster headache
Alternate Description
Episodic cluster headache NOS
ICD-10-CM Index Entry
ICD-10-CM Index entries containing back-references to ICD-10-CM '.G44.021.'
Headache; cluster; chronic; intractable