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G43 ICD-10-CM Code: Migraine

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

G43

Migraine

ICD-10-CM diagnosis code · United States clinical modification

Where G43 sits

  1. 1

    Chapter 6

    Diseases of the nervous system (G00-G99)

  2. 2

    Section

    Episodic and paroxysmal disorders (G40-G47)

  3. 3

    Category G43

    Migraine

  4. 4

    Code G43

    Migraine

Codes under G43

G43 is a non-billable category. Choose the child code that best matches the documented diagnosis.

G43.0Migraine without auraG43.1Migraine with auraG43.4Hemiplegic migraineG43.5Persistent migraine aura without cerebral infarctionG43.6Persistent migraine aura with cerebral infarctionG43.7Chronic migraine without auraG43.8Other migraineG43.9Migraine, unspecifiedG43.ACyclical vomitingG43.BOphthalmoplegic migraineG43.CPeriodic headache syndromes in child or adultG43.DAbdominal migraineG43.EChronic migraine with aura

Notes for this code

Inclusion terms

No inclusion terms are listed for G43.

Code first

No “code first” instruction is listed for G43.

Use additional code

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

Excludes1

Conditions that should not be reported together with this code.

  • lower half migraine (G44.00)

Excludes2

Conditions not included here that may be reported separately when present.

  • headache NOS (R51.9)
  • headache syndromes (G44.-)

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code G43 mean?

G43 is the FY 2027 U.S. ICD-10-CM code for “Migraine.”

Is G43 a billable or specific ICD-10-CM code?

No. G43 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is G43 located in ICD-10-CM?

G43 is listed in Chapter 6, Diseases of the nervous system (G00-G99), within Episodic and paroxysmal disorders (G40-G47) (G40–G47), under category G43, Migraine.

What coding notes are listed for G43?

No inclusion terms are listed for G43 in this reference record. No code-first instruction is listed. Additional-code instructions: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). Excludes1 notes: lower half migraine (G44.00). Excludes2 notes: headache NOS (R51.9); headache syndromes (G44.-).