G43.909 — Migraine, unspecified, not intractable, without status migrainosus
G43.909

What this code means
Migraine is a recurring headache disorder, often one-sided and throbbing, with nausea and sensitivity to light and sound.
Also called: migraine.
When this code is used
Used for migraine when the type is not specified.
Where it sits in ICD-10-CM
Code G43.909 belongs to Chapter 6: Diseases of the nervous system, which covers codes G00–G99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
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Frequently asked questions
What is ICD-10-CM code G43.909?
G43.909 is the ICD-10-CM diagnosis code for “Migraine, unspecified, not intractable, without status migrainosus”. Migraine is a recurring headache disorder, often one-sided and throbbing, with nausea and sensitivity to light and sound.
When is code G43.909 used?
Used for migraine when the type is not specified. It belongs to Chapter 6 of ICD-10-CM (Diseases of the nervous system).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.
More codes in Chapter 6
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G25.81 — Restless legs syndrome
G30.9 — Alzheimer's disease, unspecified
G31.84 — Mild cognitive impairment of uncertain or unknown etiology
G40.909 — Epilepsy, unspecified, not intractable, without status epilepticus