ICD-10 Code G43.71 – Chronic migraine without aura, intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.71 – Chronic migraine without aura, intractable
What it is
This code identifies chronic migraine without aura that does not respond well to standard treatment. Use it when the record shows migraine headaches occurring on a chronic basis and no aura symptoms.
Clinical signs
Typical findings include recurrent migraine attacks with headache features such as unilateral pain, nausea, photophobia, or phonophobia. Clinical features vary; refer to documentation for chronicity and intractability.
When to use this code
Use this code when the provider documents chronic migraine without aura and states that the condition is intractable, refractory, or poorly controlled. Make sure the note supports both the chronic migraine pattern and the absence of aura. If the record does not clearly document intractability, check documentation.
Do not use for
Do not use this code for migraine with aura, episodic migraine, or headache diagnoses that are not clearly documented as migraine. Also avoid it when intractability is not stated or supported.
Coding tip
Code only when the provider explicitly links chronic migraine, no aura, and intractable status in the assessment.