ICD-10 Code G43.909 – Migraine, unspecified, not intractable, without status migrainosus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G43.909 – Migraine, unspecified, not intractable, without status migrainosus
What it is
This code identifies a migraine diagnosis when the record does not specify the migraine type, it is not described as intractable, and there is no status migrainosus. Use it only when the documentation supports migraine but lacks further detail.
Clinical signs
Migraine commonly presents with recurrent headache episodes, often with nausea, vomiting, and sensitivity to light or sound. Clinical features vary; refer to documentation for the exact pattern, laterality, aura, and associated symptoms.
When to use this code
Use this code when the clinician documents migraine but does not name a subtype such as migraine with aura or chronic migraine. It also fits when the note states the migraine is not intractable and there is no status migrainosus. If the chart is vague, code only what is clearly supported.
Do not use for
Do not use this code for intractable migraine, status migrainosus, or a more specific migraine subtype that is documented. Do not assume migraine from nonspecific headache alone; check documentation.
Coding tip
Query for migraine subtype and intractability when the note is incomplete, because a more specific code may be available.