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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

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

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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