R56.9

ICD-10Billable

Unspecified convulsions

Official ICD-10-CM descriptor (FY2026)

Unspecified convulsions

R56.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Convulsion disorder
Fit NOS
Recurrent convulsions
Seizure(s) (convulsive) NOS

Related codes in R56

Where this code sits

Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: General symptoms and signs (R50-R69)
Parent code: R56

Krasyn AI Coder

Get code suggestions automatically as you type notes. Free for 50 analyses.

Install for Chrome — free

Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.