G44
ICD-10Non-billable categoryOther headache syndromes
Official ICD-10-CM descriptor (FY2026)
Other headache syndromes
G44 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- headache NOS (R51.9)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- atypical facial pain (G50.1)
- headache due to lumbar puncture (G97.1)
- migraines (G43.-)
- trigeminal neuralgia (G50.0)
More specific codes under G44
- G44.0Cluster headaches and oth trigeminal autonm cephalgias (TAC)category
- G44.1Vascular headache, not elsewhere classified
- G44.2Tension-type headachecategory
- G44.3Post-traumatic headachecategory
- G44.4Drug-induced headache, not elsewhere classifiedcategory
- G44.5Complicated headache syndromescategory
- G44.8Other specified headache syndromescategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.