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R56

Non-billable

Convulsions, not elsewhere classified

R56 is the ICD-10-CM code for Convulsions, not elsewhere classified. It is a non-billable category code — use a more specific child code such as R56.0 for billing.

Status
Header (non-billable)
Chapter
R00-R99
Subcodes
3
Edition
FY2026

R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Excludes1 — not coded here

  • •dissociative convulsions and seizures (F44.5)
  • •epileptic convulsions and seizures (G40.-)
  • •newborn convulsions and seizures (P90)

Frequently asked questions

What is ICD-10 code R56?
R56 is the ICD-10-CM code for "Convulsions, not elsewhere classified". It falls under R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
Is R56 a billable code?
No — R56 is a non-billable header code. Use a more specific child code (such as R56.0) for billing.
What are the subcodes of R56?
R56 has 3 more specific child codes, including R56.0, R56.1, R56.9.
What is excluded from R56?
Excludes1 (not coded here): dissociative convulsions and seizures (F44.5); epileptic convulsions and seizures (G40.-); newborn convulsions and seizures (P90).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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