R56Header code — not billable
Convulsions, not elsewhere classified
- Chapter
- 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Category
- R56
- Effective date
- October 1, 2026
Related codes in category R56
Frequently asked questions
What is ICD-10 code R56?
R56 is an ICD-10-CM diagnosis code for Convulsions, not elsewhere classified.
Is R56 a billable code?
No. R56 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is R56 in?
R56 falls under Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
When did R56 become effective?
R56 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to R56?
R56 belongs to category R56, which includes 5 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.