1. Home
2. ICD-10 Codes
3. Chapter - G00-G99
4. Section - G40-G47
5. Category - G44
6. G44.021

G44.021 - Chronic cluster headache, intractable

• Applicable to Chronic cluster headache, intractable
• The 2025 edition of ICD10-CM G44.021 became effective on October 1, 2024.
• This is the American ICD10-CM version of G44.021 - other international versions of ICD10 G44.021 may differ.
• G44.021 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above G44.021 contain annotation back-references that may be applicable to G44.021:

• Chapter: G00-G99 - Diseases of the nervous system
• Section: G40-G47 - Episodic and paroxysmal disorders
• Category: G44 - Other headache syndromes

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.