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G40.4

Non-billable

Other generalized epilepsy and epileptic syndromes

Other generalized epilepsy and epileptic syndromes

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

G40-G47

Parent Code

G40

Child Codes

3

Coding Notes

Inclusion Terms

Alternative clinical terms for this condition

  • Epilepsy with grand mal seizures on awakening
  • Epilepsy with myoclonic absences
  • Epilepsy with myoclonic-astatic seizures
  • Grand mal seizure NOS
  • Nonspecific atonic epileptic seizures
  • Nonspecific clonic epileptic seizures
  • Nonspecific myoclonic epileptic seizures
  • Nonspecific tonic epileptic seizures
  • Nonspecific tonic-clonic epileptic seizures
  • Symptomatic early myoclonic encephalopathy

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

  • conversion disorder with seizures (F44.5)
  • convulsions NOS (R56.9)
  • post traumatic seizures (R56.1)
  • seizure (convulsive) NOS (R56.9)
  • seizure of newborn (P90)

Excludes 2

Conditions not included here, but the patient may have both

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • hippocampal sclerosis (G93.81)
  • mesial temporal sclerosis (G93.81)
  • temporal sclerosis (G93.81)
  • Todd's paralysis (G83.84)

Child Codes (3)

G40.40

Oth generalized epilepsy, not intractable

G40.41

Oth generalized epilepsy, intractable

G40.42

Cyclin-Dependent Kinase-Like 5 Deficiency Disorder

Billable

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is ICD-10 code G40.4?

ICD-10-CM code G40.4 represents "Other generalized epilepsy and epileptic syndromes". It is a non-billable header code — use a more specific child code for billing purposes.

Is G40.4 a billable code?

No, G40.4 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under G40.4.

What chapter is G40.4 in?

G40.4 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).

What codes cannot be used with G40.4?

G40.4 has Excludes1 notes indicating codes that cannot be used together with it, including: conversion disorder with seizures (F44.5); convulsions NOS (R56.9); post traumatic seizures (R56.1); and 2 more.

What are the subcategories under G40.4?

G40.4 has 3 child codes, including: G40.40 (Oth generalized epilepsy, not intractable), G40.41 (Oth generalized epilepsy, intractable), G40.42 (Cyclin-Dependent Kinase-Like 5 Deficiency Disorder).

What are the UMLS CUIs for G40.4?

G40.4 is linked to 11 UMLS Concept Unique Identifiers: C0393702, C0494475, C0393703, C0270855, C0393697, and 6 more. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.