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 G44 – Other headache syndromes (G44) > 2024 ICD-10-CM Codes G44.3 – Post-traumatic headache (G44.3)