Is G44.01 a billable code?
No. G44.01 is a header code that groups 2 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
G44.01: Episodic cluster headache
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
G44.01 groups related diagnoses under episodic cluster headache. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under G44.01
Other codes in G44.0 Cluster headaches and other trigeminal autonomic cephalgias (TAC)
- G44.00Cluster headache syndrome, unspecifiedheader
- G44.02Chronic cluster headacheheader
- G44.03Episodic paroxysmal hemicraniaheader
- G44.04Chronic paroxysmal hemicraniaheader
- G44.05Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)header
- G44.09Other trigeminal autonomic cephalgias (TAC)header
G44.01 questions
What does G44.01 mean?
G44.01 is the ICD-10-CM code for Episodic cluster headache. 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.