Is G44.0 a billable code?
No. G44.0 is a header code that groups 14 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
G44.0: Cluster headaches and other trigeminal autonomic cephalgias (TAC)
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
G44.0 groups related diagnoses under cluster headaches and other trigeminal autonomic cephalgias (tac). It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under G44.0
- G44.001Cluster headache syndrome, unspecified, intractable
- G44.009Cluster headache syndrome, unspecified, not intractable
- G44.011Episodic cluster headache, intractable
- G44.019Episodic cluster headache, not intractable
- G44.021Chronic cluster headache, intractable
- G44.029Chronic cluster headache, not intractable
- G44.031Episodic paroxysmal hemicrania, intractable
- G44.039Episodic paroxysmal hemicrania, not intractable
- G44.041Chronic paroxysmal hemicrania, intractable
- G44.049Chronic paroxysmal hemicrania, not intractable
- G44.051Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable
- G44.059Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable
- G44.091Other trigeminal autonomic cephalgias (TAC), intractable
- G44.099Other trigeminal autonomic cephalgias (TAC), not intractable
Other codes in G44 Other headache syndromes
G44.0 questions
What does G44.0 mean?
G44.0 is the ICD-10-CM code for Cluster headaches and other trigeminal autonomic cephalgias (TAC). It is in chapter 6, Diseases of the nervous system (G00-G99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.