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G43

Non-billable

Migraine

G43 is the ICD-10-CM code for Migraine. It is a non-billable category code — use a more specific child code such as G43.0 for billing.

Status
Header (non-billable)
Chapter
G00-G99
Subcodes
13
Edition
FY2026

G00-G99 Diseases of the nervous system

What this means — in plain language

MedlinePlus · NIH

What are migraines? Migraines are a recurring type of headache. They cause moderate to severe pain that is throbbing or pulsing. The pain is often on one side of your head. You may also have other symptoms, such as nausea and weakness. You may be sensitive to light and sound. What causes migraines? Researchers believe that migraine has a genetic cause. There are also a number of factors that can trigger a migraine.…

Read more about Migraine at MedlinePlus ↗
Migraine ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes1 — not coded here

Excludes2 — not included here

  • •headache syndromes (G44.-)

Use additional code

  • •code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Notes

  • •the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH
MigraineHeadacheMenstruation

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code G43?
G43 is the ICD-10-CM code for "Migraine". It falls under G00-G99 Diseases of the nervous system.
Is G43 a billable code?
No — G43 is a non-billable header code. Use a more specific child code (such as G43.0) for billing.
What are the subcodes of G43?
G43 has 13 more specific child codes, including G43.0, G43.1, G43.4.
What is excluded from G43?
Excludes1 (not coded here): headache NOS (R51.9); lower half migraine (G44.00).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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