G44.4
ICD-10Non-billable categoryDrug-induced headache, not elsewhere classified
Official ICD-10-CM descriptor (FY2026)
Drug-induced headache, not elsewhere classified
G44.4 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.
Inclusion terms
- Medication overuse headache
Use additional code
Report an additional code to identify the associated condition.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
ICD-10-CM FY2026 defines 2 codes beneath G44.4. See the ICD-10-CM index for what this site publishes.
Related codes in G44
Where this code sits
- Parent code
- G44
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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.