2026 ICD-10-CM Diagnosis Code G43Migraine

ICD-10-CM Codes›G00–G99›G40-G47›G43

ICD-10-CM G43
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G43 is a non-billable ICD-10-CM category code for migraine, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G43.001, G43.009, G43.011, and G43.019.

Code Identity

ICD-10-CM Code
G43
Billable Status
No — Non-Billable Category
Code Describes
Migraine
Chapter
G40-G47
Episodic and paroxysmal disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG40-G47Episodic and paroxysmal disorders
CategoryG43Migraine
This CodeG43Migraine

Specific Coding for MigraineOverview

Non-specific codes like G43 require more characters. Use one of these billable codes instead:

  • G43.0 for Migraine without aura

  • G43.00 for Migraine without aura, not intractable

  • G43.01 for Migraine without aura, intractable

  • G43.1 for Migraine with aura

  • G43.10 for Migraine with aura, not intractable

  • G43.11 for Migraine with aura, intractable

  • G43.4 for Hemiplegic migraine

  • G43.40 for Hemiplegic migraine, not intractable

  • G43.41 for Hemiplegic migraine, intractable

  • G43.5 for Persistent migraine aura without cerebral infarction

  • G43.50 for Persistent migraine aura without cerebral infarction, not intractable

  • G43.51 for Persistent migraine aura without cerebral infarction, intractable

  • G43.6 for Persistent migraine aura with cerebral infarction

  • G43.60 for Persistent migraine aura with cerebral infarction, not intractable

  • G43.61 for Persistent migraine aura with cerebral infarction, intractable

  • G43.7 for Chronic migraine without aura

  • G43.70 for Chronic migraine without aura, not intractable

  • G43.71 for Chronic migraine without aura, intractable

  • G43.8 for Other migraine

  • G43.80 for Other migraine, not intractable

  • G43.81 for Other migraine, intractable

  • G43.82 for Menstrual migraine, not intractable

  • G43.83 for Menstrual migraine, intractable

  • G43.9 for Migraine, unspecified

  • G43.90 for Migraine, unspecified, not intractable

  • G43.91 for Migraine, unspecified, intractable

  • G43.A for Cyclical vomiting

  • Use G43.A0 for Cyclical vomiting, in migraine, not intractable

  • Use G43.A1 for Cyclical vomiting, in migraine, intractable

  • G43.B for Ophthalmoplegic migraine

  • Use G43.B0 for Ophthalmoplegic migraine, not intractable

  • Use G43.B1 for Ophthalmoplegic migraine, intractable

  • G43.C for Periodic headache syndromes in child or adult

  • Use G43.C0 for Periodic headache syndromes in child or adult, not intractable

  • Use G43.C1 for Periodic headache syndromes in child or adult, intractable

  • G43.D for Abdominal migraine

  • Use G43.D0 for Abdominal migraine, not intractable

  • Use G43.D1 for Abdominal migraine, intractable

  • G43.E for Chronic migraine with aura

  • G43.E0 for Chronic migraine with aura, not intractable

  • G43.E1 for Chronic migraine with aura, intractable

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code for adverse effect, if applicable, to identify drug T36 T50

Type 1 Excludes

Type 2 Excludes

  • headache syndromes G44

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

Patient EducationClinical

Migraine

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.

The full article covers:

  • What are migraines?
  • What causes migraines?
  • Who is at risk for migraines?
  • What are the symptoms of migraines?
  • How are migraines diagnosed?
  • How are migraines treated?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G43Overview

Is G43 (Migraine) a billable code?

No. This is a category header that groups the codes for migraine, and headers cannot be submitted on claims. Claims for migraine need a more specific code from this category, such as G43.001, G43.009, and G43.011.