ICD-10 Code G44.32 – Chronic post-traumatic headache (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G44.32 – Chronic post-traumatic headache
What it is
G44.32 identifies a headache that persists after a head injury or concussion and continues over time. Use it when the record documents a chronic post-traumatic headache rather than a one-time acute headache.
Clinical signs
Clinical features vary; refer to documentation. Common notes include headache beginning after trauma, ongoing or recurrent pain, and possible association with concussion or other head injury.
When to use this code
Use this code when the provider documents a chronic headache attributed to prior trauma and the condition is still active. It fits follow-up visits, specialty evaluations, and problem-list coding when the chronic post-traumatic headache remains part of the assessment.
Make sure the chart links the headache to the earlier injury. If the note only says “headache” without a traumatic cause or chronicity, check documentation before assigning G44.32.
Do not use for
Do not use this code for acute post-traumatic headache, migraine, or tension-type headache unless the record specifically identifies chronic post-traumatic headache. Check documentation if the cause or duration is unclear.
Coding tip
Code G44.32 only when both trauma history and chronic persistence are clearly documented.