2026 ICD-10-CM Diagnosis Code G43.E19Chronic migraine with aura, intractable, without status migrainosus

ICD-10-CM Codes›G00–G99›G40-G47›G43

ICD-10-CM G43.E19
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G43.E19 is a billable ICD-10-CM diagnosis code for chronic migraine with aura, intractable, without status migrainosus. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 102 through 103. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Headache; including migraine.

Code Identity

ICD-10-CM Code
G43.E19
Billable Status
Yes — Valid for Submission
Code Describes
Chronic migraine with aura, intractable, without status migrainosus
Short Description
Chronic migraine with aura, intractable, without stat migr
Parent Code
G43.E1
Chronic migraine with aura, intractable

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG40-G47Episodic and paroxysmal disorders
CategoryG43Migraine
This CodeG43.E19Chronic migraine with aura, intractable, without status migrainosus

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Migraine(idiopathic)
      • with aura (acute-onset) (prolonged) (typical) (without headache)
        • chronic
          • with refractory migraine
    • Migraine(idiopathic)
      • with aura (acute-onset) (prolonged) (typical) (without headache)
        • chronic
          • with refractory migraine
            • without status migrainosus
    • Migraine(idiopathic)
      • with aura (acute-onset) (prolonged) (typical) (without headache)
        • chronic
          • intractable
            • without status migrainosus

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS010
Headache; including migraine
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement G43.E19 replaces the following previously assigned code(s):

  • G43.819 - Other migraine, intractable, without status migrainosus
FY 2024AddedAdded to the ICD-10-CM code setEffective October 1, 2023.
FY 2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G43.E19Overview

Is G43.E19 (Chronic migraine with aura, intractable) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic migraine with aura, intractable, without status migrainosus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does G43.E19 group to?

When chronic migraine with aura, intractable, without status migrainosus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 102, 103, with relative weights from 0.8363 to 1.1209 depending on complications. Higher weights mean higher Medicare reimbursement.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.