ICD-10-CM G43 is the diagnosis code for Migraine. This code falls under the section "Episodic and paroxysmal disorders" within Chapter 6 â Diseases of the nervous system (G00-G99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as G43. They are mutually exclusive:
The following conditions are not included in G43. If the patient has both, code each condition separately:
Understanding where G43 sits in the ICD-10-CM classification helps ensure proper coding:
No, G43 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
G43 is the ICD-10-CM diagnosis code for "Migraine". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
G43 is located in Section G40-G47 â "Episodic and paroxysmal disorders" within Chapter 6 of the ICD-10-CM Tabular List.
G43 has 13 sub-code(s) that provide more specific detail: G43.0, G43.1, G43.4, G43.5, G43.6 and more.
Use G43 when the patients documented diagnosis matches "Migraine" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Migraine is G43.
No, G43 is non-billable. Use a more specific sub-code for primary diagnosis billing.
G43 is in Chapter 6 of the ICD-10-CM Tabular List.
Type 1 Excludes for G43 include: lower half migraine (G44.00).
Yes, G43 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.