ICD-10-CM · Chapter 18 · R00-R99
R56 Convulsions, not elsewhere classified
Excludes 1 (cannot be coded together)
- dissociative convulsions and seizures (F44.5)
- epileptic convulsions and seizures (G40.-)
- newborn convulsions and seizures (P90)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| R56..0 | Febrile convulsions | No |
| R56..00 | Simple febrile convulsions | Yes |
| R56..01 | Complex febrile convulsions | Yes |
| R56..1 | Post traumatic seizures | Yes |
| R56..9 | Unspecified convulsions | Yes |
Plain-language terms for this code
The following entries in the US Medical Glossary correspond to ICD-10-CM category R56:
- Seizure — Convulsión
- Febrile Seizure — Convulsión febril
Last reviewed: September 2026