Migraine (G43) ICD-10-CM
The G43 code range covers migraine with 82 ICD-10-CM diagnosis codes. 48 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- headache syndromes G44
- the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
Codes in the G43 Range 82 codes · 48 billable
- G43 MigraineNon-billable
- G43.0 Migraine without auraNon-billable
- G43.00 Migraine without aura, not intractableNon-billable
- G43.001 Migraine without aura, not intractable, with status migrainosus
- G43.009 Migraine without aura, not intractable, without status migrainosus
- G43.01 Migraine without aura, intractableNon-billable
- G43.011 Migraine without aura, intractable, with status migrainosus
- G43.019 Migraine without aura, intractable, without status migrainosus
- G43.1 Migraine with auraNon-billable
- G43.10 Migraine with aura, not intractableNon-billable
- G43.101 Migraine with aura, not intractable, with status migrainosus
- G43.109 Migraine with aura, not intractable, without status migrainosus
- G43.11 Migraine with aura, intractableNon-billable
- G43.111 Migraine with aura, intractable, with status migrainosus
- G43.119 Migraine with aura, intractable, without status migrainosus
- G43.4 Hemiplegic migraineNon-billable
- G43.40 Hemiplegic migraine, not intractableNon-billable
- G43.401 Hemiplegic migraine, not intractable, with status migrainosus
- G43.409 Hemiplegic migraine, not intractable, without status migrainosus
- G43.41 Hemiplegic migraine, intractableNon-billable
- G43.411 Hemiplegic migraine, intractable, with status migrainosus
- G43.419 Hemiplegic migraine, intractable, without status migrainosus
- G43.5 Persistent migraine aura without cerebral infarctionNon-billable
- G43.50 Persistent migraine aura without cerebral infarction, not intractableNon-billable
- G43.501 Persistent migraine aura without cerebral infarction, not intractable, with status migrainosus
- G43.509 Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus
- G43.51 Persistent migraine aura without cerebral infarction, intractableNon-billable
- G43.511 Persistent migraine aura without cerebral infarction, intractable, with status migrainosus
- G43.519 Persistent migraine aura without cerebral infarction, intractable, without status migrainosus
- G43.6 Persistent migraine aura with cerebral infarctionNon-billable
- G43.60 Persistent migraine aura with cerebral infarction, not intractableNon-billable
- G43.601 Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus
- G43.609 Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus
- G43.61 Persistent migraine aura with cerebral infarction, intractableNon-billable
- G43.611 Persistent migraine aura with cerebral infarction, intractable, with status migrainosus
- G43.619 Persistent migraine aura with cerebral infarction, intractable, without status migrainosus
- G43.7 Chronic migraine without auraNon-billable
- G43.70 Chronic migraine without aura, not intractableNon-billable
- G43.701 Chronic migraine without aura, not intractable, with status migrainosus
- G43.709 Chronic migraine without aura, not intractable, without status migrainosus
- G43.71 Chronic migraine without aura, intractableNon-billable
- G43.711 Chronic migraine without aura, intractable, with status migrainosus
- G43.719 Chronic migraine without aura, intractable, without status migrainosus
- G43.8 Other migraineNon-billable
- G43.80 Other migraine, not intractableNon-billable
- G43.801 Other migraine, not intractable, with status migrainosus
- G43.809 Other migraine, not intractable, without status migrainosus
- G43.81 Other migraine, intractableNon-billable
- G43.811 Other migraine, intractable, with status migrainosus
- G43.819 Other migraine, intractable, without status migrainosus
- G43.82 Menstrual migraine, not intractableNon-billable
- G43.821 Menstrual migraine, not intractable, with status migrainosus
- G43.829 Menstrual migraine, not intractable, without status migrainosus
- G43.83 Menstrual migraine, intractableNon-billable
- G43.831 Menstrual migraine, intractable, with status migrainosus
- G43.839 Menstrual migraine, intractable, without status migrainosus
- G43.9 Migraine, unspecifiedNon-billable
- G43.90 Migraine, unspecified, not intractableNon-billable
- G43.901 Migraine, unspecified, not intractable, with status migrainosus
- G43.909 Migraine, unspecified, not intractable, without status migrainosus
- G43.91 Migraine, unspecified, intractableNon-billable
- G43.911 Migraine, unspecified, intractable, with status migrainosus
- G43.919 Migraine, unspecified, intractable, without status migrainosus
- G43.A Cyclical vomitingNon-billable
- G43.A0 Cyclical vomiting, in migraine, not intractable
- G43.A1 Cyclical vomiting, in migraine, intractable
- G43.B Ophthalmoplegic migraineNon-billable
- G43.B0 Ophthalmoplegic migraine, not intractable
- G43.B1 Ophthalmoplegic migraine, intractable
- G43.C Periodic headache syndromes in child or adultNon-billable
- G43.C0 Periodic headache syndromes in child or adult, not intractable
- G43.C1 Periodic headache syndromes in child or adult, intractable
- G43.D Abdominal migraineNon-billable
- G43.D0 Abdominal migraine, not intractable
- G43.D1 Abdominal migraine, intractable
- G43.E Chronic migraine with auraNon-billable
- G43.E0 Chronic migraine with aura, not intractableNon-billable
- G43.E01 Chronic migraine with aura, not intractable, with status migrainosus
- G43.E09 Chronic migraine with aura, not intractable, without status migrainosus
- G43.E1 Chronic migraine with aura, intractableNon-billable
- G43.E11 Chronic migraine with aura, intractable, with status migrainosus
- G43.E19 Chronic migraine with aura, intractable, without status migrainosus
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the G43 range.
Migraine with Aura
A subtype of migraine disorder, characterized by recurrent attacks of reversible neurological symptoms (aura) that precede or accompany the headache. Aura may include a combination of sensory disturbances, such as blurred VISION; HALLUCINATIONS; VERTIGO; NUMBNESS; and difficulty in concentrating and speaking. Aura is usually followed by features of the COMMON MIGRAINE, such as PHOTOPHOBIA; PHONOPHOBIA; and NAUSEA. (International Classification of Headache Disorders, 2nd ed. Cephalalgia 2004: suppl 1)
Migraine without Aura
Recurrent unilateral pulsatile headaches, not preceded or accompanied by an aura, in attacks lasting 4-72 hours. It is characterized by PAIN of moderate to severe intensity; aggravated by physical activity; and associated with NAUSEA and / or PHOTOPHOBIA and PHONOPHOBIA. (International Classification of Headache Disorders, 2nd ed. Cephalalgia 2004: suppl 1)
Ophthalmoplegic Migraine
Childhood-onset of recurrent headaches with an oculomotor cranial nerve palsy. Typically, ABDUCENS NERVE; OCULOMOTOR NERVE; and TROCHLEAR NERVE are involved with DIPLOPIA and BLEPHAROPTOSIS.
About the G43 Code Range
The ICD-10 codes under G43 classify various types of migraines, including those with and without aura, chronic forms, and specialized variants like hemiplegic and menstrual migraines. These codes are used to specify migraine diagnoses, distinguishing severity, aura presence, and complications such as status migrainosus.
These codes provide precise identification for a wide range of migraine types. For example, G43.0 codes denote migraine without aura, often called "common migraine," and differentiate between intractable (hard to treat) and non-intractable forms. The term status migrainosus appears in several subcodes (e.g., G43.001), describing migraines that last longer than 72 hours and require specific attention. Codes like G43.1 represent migraine with aura, which includes visual or sensory disturbances; synonyms include "retinal migraine" or "basilar migraine" to help coders link clinical terms to official codes. Chronic migraines without aura fall under G43.7, with terms like "transformed migraine" used interchangeably.
Specialized migraines such as hemiplegic migraine (G43.4), menstrual migraine (G43.82), and variants like ophthalmoplegic migraine (G43.B) address unique clinical features and severity. The category also includes cyclical vomiting syndrome associated with migraines (G43.A). By using these detailed codes, healthcare providers and coders can accurately document the type and complexity of a patient's migraine condition, improving treatment planning and data tracking for conditions like intractable migraine or those with neurological complications.
Questions About This Page
How many billable codes are in the G43 range?
Of the 82 codes in this range, 48 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the G43 range classify?
The range classifies migraine. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
