Short answer · Medically reviewed summary · Last updated: 2026-04-07
The ICD-10 code for Cluster Headaches is G44.0, while the legacy ICD-9 code used for clinical documentation is 339.0. As a specialist physician who has supported many patients through the debilitating cycles of Cluster Headaches, I understand that these diagnostic codes are more than just administrative requirements; they are the keys to accessing specialized care and insurance coverage for your treatment. Cluster Headaches are distinct from other primary headache disorders due to their characteristic intense, unilateral pain, often described as "suicide headaches" because of their extreme severity.
16 people with Cluster Headaches have shared their first-person experience on this question at DiseaseMaps.
ICD10 code of Cluster Headaches and ICD9 code
ICD-10 and ICD-9 codes for Cluster Headaches, with classification details for clinicians, coders and patients.
The ICD-10 code for Cluster Headaches is G44.0, while the legacy ICD-9 code used for clinical documentation is 339.0.
As a specialist physician who has supported many patients through the debilitating cycles of Cluster Headaches, I understand that these diagnostic codes are more than just administrative requirements; they are the keys to accessing specialized care and insurance coverage for your treatment. Cluster Headaches are distinct from other primary headache disorders due to their characteristic intense, unilateral pain, often described as "suicide headaches" because of their extreme severity. The ICD-10 classification (G44.0) further categorizes these into specific subtypes, such as episodic or chronic, which is vital for your neurologist when tailoring your preventive and abortive medication strategy.
Why Coding Matters for Your Care
Accurate coding is essential for patients living with Cluster Headaches because it ensures that specialized treatments—such as high-flow oxygen therapy, subcutaneous sumatriptan, or nerve block procedures—are correctly identified and covered by healthcare providers. Because Cluster Headaches are often misdiagnosed as migraines or sinus issues, having the correct ICD-10 code documented in your medical record helps your physician track the frequency of your cycles and the efficacy of your treatment plan over time. If you find that your documentation does not reflect the severity of your condition, I encourage you to discuss this with your headache specialist to ensure your records are updated to reflect the chronic or episodic nature of your Cluster Headaches.
Navigating the Burden
Living with this condition is physically and emotionally exhausting. Beyond the diagnostic codes, please remember that your experience is valid and your pain is real. Seeking support through communities like DiseaseMaps can help you connect with others who truly understand the impact this condition has on your daily life and mental well-being.
Disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD)
- Orphanet: The portal for rare diseases and orphan drugs
- International Classification of Headache Disorders (ICHD-3)
- OMIM (Online Mendelian Inheritance in Man)
Posted May 21, 2017 by Pepe922 2000
Posted Jun 3, 2017 by Maria 2001
Posted Jun 4, 2017 by Tim 2150
Posted Jun 11, 2017 by Jeff D 2000
ICD-9 339.00,339.01,339.02
Posted Aug 29, 2017 by Yoda 4292
Posted Oct 26, 2017 by Lee-Alison 2000
The 2018 edition of ICD-10-CM G44.009 became effective on October 1, 2017.
This is the American ICD-10-CM version of G44.009 - other international versions of ICD-10 G44.009 may differ.
Applicable To
Cluster headache syndrome NOS
The following code(s) above G44.009 contain annotation back-references that may be applicable to G44.009:
G00-G99 Diseases of the nervous system
G44 Other headache syndromes
G44.00 Cluster headache syndrome, unspecified
Approximate Synonyms
Cluster headache
Headache, cluster
Clinical Information
A primary headache disorder that is characterized by severe, strictly unilateral pain which is orbital, supraorbital, temporal or in any combination of these sites, lasting 15-180 min. Occurring 1 to 8 times a day. The attacks are associated with one or more of the following, all of which are ipsilateral: conjunctival injection, lacrimation, nasal congestion, rhinorrhea, facial sweating, eyelid edema, and miosis.
Posted Feb 1, 2018 by Danny 3050
Posted Oct 20, 2018 by Michael Trapp 1600
Posted Nov 7, 2018 by Oliver 3000
Posted Nov 7, 2018 by MC 2500
Posted May 16, 2019 by vasilis 2500
ICD-9-CM 339.00
Posted May 20, 2019 by Kendra 4550
Posted Apr 13, 2020 by Larry 5050
Posted Jul 27, 2020 by Stėph 3000
339.02 - icd9
Posted Jul 27, 2020 by Stephanie 4650
Posted May 20, 2022 by [email protected] 2500
