U.S. ICD-10-CM · FY 2027

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.

Code definition

Official description

G43

Migraine

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

Classification

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

More specific choices

Codes under G43

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

G43.0

Migraine without aura

G43.1

Migraine with aura

G43.4

Hemiplegic migraine

G43.5

Persistent migraine aura without cerebral infarction

G43.6

Persistent migraine aura with cerebral infarction

G43.7

Chronic migraine without aura

G43.8

Other migraine

G43.9

Migraine, unspecified

G43.A

Cyclical vomiting

G43.B

Ophthalmoplegic migraine

G43.C

Periodic headache syndromes in child or adult

G43.D

Abdominal migraine

G43.E

Chronic migraine with aura

Documentation details

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.-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

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

Code-specific guidance

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.-).

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