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 Term

  • Ciliary neuralgia
  • Cluster headache NOS
  • Histamine cephalgia
  • Lower half migraine
  • Migrainous neuralgia

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

  
Non-Billable/Non-Specific Code

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