G44.00 - Cluster headache syndrome, unspecified
- Applicable to Cluster headache syndrome, unspecified
- The 2025 edition of ICD10-CM G44.00 became effective on October 1, 2024.
- This is the American ICD10-CM version of G44.00 - other international versions of ICD10 G44.00 may differ.
- G44.00 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- G44.00 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
- G44.00 - Cluster headache syndrome, unspecified
- G44.00 - Cluster headache syndrome, unspecified
- G44.001 - Cluster headache syndrome, unspecified, intractable
- G44.009 - Cluster headache syndrome, unspecified, not intractable
Inclusion terms help to clarify and specify the conditions or diseases covered by a particular ICD-10-CM code.
Inclusion Term:
- Ciliary neuralgia
- Cluster headache NOS
- Histamine cephalgia
- Lower half migraine
- Migrainous neuralgia
Non-Billable/Non-Specific Code
The following codes above G44.00 contain annotation back-references that may be applicable to G44.00:
- 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.
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