G44.4
Drug-induced headache, not elsewhere classified
G44.4 is a non-billable ICD-10-CM code header for drug-induced headache, not elsewhere classified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G44.40 Drug-induced headache, not elsewhere classified, not intractable and G44.41 Drug-induced headache, not elsewhere classified, intractable. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 12 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- 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)
Inclusion terms
Conditions classified to this code.
- Medication overuse headache