G40-G47: Episodic and paroxysmal disorders
ICD-10-CM 2027 block G40-G47 in chapter 6 (Diseases of the nervous system) has 6 categories.
- G40 – Epilepsy and recurrent seizures 58 billable codes
- G43 – Migraine 48 billable codes
- G44 – Other headache syndromes 40 billable codes
- G45 – Transient cerebral ischemic attacks and related syndromes 7 billable codes
- G46 – Vascular syndromes of brain in cerebrovascular diseases 9 billable codes
- G47 – Sleep disorders 43 billable codes