Get started free

G40.31

Non-billable

Generalized idiopathic epilepsy and epileptic syndromes, intractable

G40.31 is the ICD-10-CM code for Generalized idiopathic epilepsy and epileptic syndromes, intractable. It is a non-billable category code — use a more specific child code such as G40.311 for billing.

Status
Header (non-billable)
Chapter
G00-G99
Parent
G40.3
Subcodes
2
Edition
FY2026

G00-G99 Diseases of the nervous system

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code G40.31?
G40.31 is the ICD-10-CM code for "Generalized idiopathic epilepsy and epileptic syndromes, intractable". It falls under G00-G99 Diseases of the nervous system.
Is G40.31 a billable code?
No — G40.31 is a non-billable header code. Use a more specific child code (such as G40.311) for billing.
What are the subcodes of G40.31?
G40.31 has 2 more specific child codes, including G40.311, G40.319.

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

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →