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