Billable / Specific Code
ICD-10-CM G44.001 is the diagnosis code for Cluster headache syndrome, unspecified, intractable. This code falls under the section "Episodic and paroxysmal disorders" within Chapter 6 — Diseases of the nervous system (G00-G99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where G44.001 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, G44.001 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
G44.001 is the ICD-10-CM diagnosis code for "Cluster headache syndrome, unspecified, intractable". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of G44.001 is G44.00 ("Cluster headache syndrome, unspecified"). G44.001 provides a more specific classification within this category.
G44.001 is located in Section G40-G47 — "Episodic and paroxysmal disorders" within Chapter 6 of the ICD-10-CM Tabular List.
Use G44.001 when the patients documented diagnosis matches "Cluster headache syndrome, unspecified, intractable" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Cluster headache syndrome, unspecified, intractable is G44.001.
Yes, G44.001 can be used as a primary diagnosis code since it is billable and specific.
G44.001 is in Chapter 6 of the ICD-10-CM Tabular List.
Yes, G44.001 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.