Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes G00-G99 – Diseases of the nervous system (G00-G99) > 2024 ICD-10-CM Codes G40-G47 – Episodic and paroxysmal disorders (G40-G47) > 2024 ICD-10-CM Codes G43 – Migraine > 2024 ICD-10-CM Codes G43.7 – Chronic migraine without aura (G43.7) > 2024 ICD-10-CM Codes G43.71 – Chronic migraine without aura, intractable (G43.71)