ICD-10 Code G43.7 – Chronic migraine without aura (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.7 – Chronic migraine without aura
What it is
This code identifies chronic migraine without aura, a migraine disorder with recurrent headache days and no aura symptoms. Use it when the record documents chronic migraine and specifically states that aura is absent.
Clinical signs
Typical documentation includes frequent migraine headaches, often with nausea, photophobia, or phonophobia. Clinical features vary; refer to documentation, and confirm that no aura is reported.
When to use this code
Use this code when the provider diagnoses chronic migraine without aura in the assessment, problem list, or encounter note. It is appropriate when the chart supports a chronic migraine pattern and clearly excludes aura. If the note only says migraine, check documentation.
Do not use for
Do not use it when aura is documented, since a different migraine code applies. Do not assign it for nonspecific headache or when the record does not support chronic migraine.
Coding tip
Verify both chronicity and the absence of aura in the provider’s documentation before assigning G43.7.