ICD-10 Code G44.329 – Chronic post-traumatic headache, not intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G44.329 – Chronic post-traumatic headache, not intractable
What it is
This code identifies a headache that continues after a head injury and is described as chronic. It is not intractable, meaning it is not documented as resistant to treatment.
Clinical signs
Clinical features vary; refer to documentation. You may see persistent headache after trauma, often with a temporal link to the injury and ongoing symptoms beyond the acute phase.
When to use this code
Use this code when the record clearly states chronic post-traumatic headache and does not describe the headache as intractable. It fits follow-up visits for ongoing headache attributed to a prior head injury. Confirm that the provider links the headache to trauma.
Do not use for
Do not use this code if the headache is documented as intractable or if there is no clear post-traumatic relationship. Check documentation when the record only says headache or post-concussion symptoms.
Coding tip
Verify both chronicity and the trauma connection in the note before assigning G44.329.