Cluster headache syndrome, unspecified, not intractable

This code represents a diagnosis of cluster headache syndrome where the specific type of cluster headache is not documented, and the condition is not considered intractable. Cluster headaches are severe, unilateral head pain attacks, often accompanied by autonomic symptoms such as lacrimation, nasal congestion, or ptosis, occurring in clusters over a period of time.

Use this code when the medical record clearly documents a diagnosis of cluster headache, but the provider has not specified if it is episodic or chronic, and there is no indication that the condition is resistant to treatment. This code is appropriate when the documentation supports the characteristic symptoms of cluster headache without further specificity regarding its classification or intractability.

• Avoid using this code if the documentation specifies the type of cluster headache (e.g., episodic or chronic) or if it is noted as intractable.
• Query the provider for further specificity regarding the type of cluster headache (G44.01- for episodic, G44.02- for chronic) and intractability if not documented.
• Do not confuse with other headache types like migraine (G43.-) or tension-type headache (G44.2-).