ICD-10 Code G44.311 – Acute post-traumatic headache, intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G44.311 – Acute post-traumatic headache, intractable
What it is
This code identifies a headache that begins soon after a head injury and is difficult to control. Use it when the provider documents an acute post-traumatic headache that is intractable.
Clinical signs
Clinical features vary; refer to documentation. Typical notes describe headache after trauma, with persistent or severe pain that does not respond adequately to usual measures.
When to use this code
Use this code when the record clearly links the headache to recent head trauma and states it is acute and intractable. It may appear in concussion or other injury follow-up when the headache is the documented ongoing problem. Check documentation if timing or severity is unclear.
Do not use for
Do not use this code for chronic post-traumatic headache or for headache without documented intractability. If the headache is not linked to trauma, choose a different headache code.
Coding tip
Always verify that both “acute” and “intractable” are documented before assigning G44.311.