ICD-10-CM › Chapter 6 Diseases of the nervous system › G40-G47
G40-G47 - Episodic and paroxysmal disorders
307 ICD-10-CM codes sit in this section, of which 205 are billable in FY2027. Every one has a page giving the years it was valid and what to use instead when it is not.
- 307 codes
- 205 billable FY2027
- 102 not billable, retired or subdivided
- 6 categories
Categories
Each of these is a three-character category. Most are not billable on their own - the billable code is one of the children listed on its page.
| Code | Description | Status |
|---|---|---|
| G40 | Epilepsy and recurrent seizures | Not billable |
| G43 | Migraine | Not billable |
| G44 | Other headache syndromes | Not billable |
| G45 | Transient cerebral ischemic attacks and related syndromes | Not billable |
| G46 | Vascular syndromes of brain in cerebrovascular diseases | Not billable |
| G47 | Sleep disorders | Not billable |
Or browse all ICD-10-CM codes by first character, check a list of codes with the batch validity checker, or see what changed in each release.