G44.009
Cluster headache syndrome, unspecified, not intractable
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Cluster headache syndrome NOS
Ciliary neuralgia Cluster headache NOS Histamine cephalgia Lower half migraine Migrainous neuralgia
certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Official Guidelines for G44.009
FY 2026 ›Find G44.009 in the alphabetic index
12 index paths lead to this code
- Cephalgia, cephalalgia › histamine
- Headache › cluster
- Headache › histamine
- Neuralgia, neuralgic › ciliary
- Neuralgia, neuralgic › migrainous
- Syndrome › cluster headache
- Cephalgia, cephalalgia › histamine › not intractable
- Headache › cluster › not intractable
- Headache › histamine › not intractable
- Neuralgia, neuralgic › ciliary › not intractable
- Neuralgia, neuralgic › migrainous › not intractable
- Syndrome › cluster headache › not intractable