ICD-10 Code G44 – Other headache syndromes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G44 – Other headache syndromes
What it is
G44 covers headache disorders that do not fit a more specific ICD-10 headache code. Use it for documented headache syndromes when the chart does not support a narrower diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Typical notes may describe recurrent or persistent headache, location or pattern changes, and associated symptoms such as nausea, photophobia, or neck discomfort.
When to use this code
Use G44 when the provider documents an “other” headache syndrome or a headache disorder outside the more specific categories. It can also fit cases where the headache type is identified, but the record does not support a more precise code. Check documentation for the exact syndrome named.
Do not use for
Do not use G44 when the record clearly supports a specific headache diagnosis with its own ICD-10 code. Avoid using it as a default for unspecified pain without documented headache syndrome.
Coding tip
Code the most specific headache diagnosis documented, and query the provider if the note uses a named syndrome that is not clearly classified.