G40.3
Non-billableGeneralized idiopathic epilepsy and epileptic syndromes
Generalized idiopathic epilepsy and epileptic syndromes
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
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)
Code Also
A second code may be required; sequencing depends on circumstances
- MERRF syndrome, if applicable (E88.42)
Child Codes (2)
Also Known As / Clinical Terms
UMLS
- EIGC0270850
- EPILEPSY, IDIOPATHIC GENERALIZEDC0270850
- Epilepsy, Idiopathic GeneralizedC0270850
- Generalized idiopathic epilepsy and epileptic syndromesC0270850
- Generalized idiopathic epilepsy and epileptic syndromes NOSC0270850
- IDIOPATHIC GENERALIZED EPILEPSYC0270850
- IGEC0270850
- IGE - idiopathic generalised epilepsyC0270850
- IGE - idiopathic generalized epilepsyC0270850
- Idiopathic Generalized EpilepsyC0270850
- Idiopathic generalised epilepsyC0270850
- Idiopathic generalized epilepsyC0270850
- Idiopathic generalized epilepsy (disorder)C0270850
- epilepsies generalised idiopathicC0270850
- epilepsy generalized primaryC0270850
- idiopathic generalized epilepsyC0270850
- primary generalized epilepsyC0270850
Frequently Asked Questions
What is ICD-10 code G40.3?
ICD-10-CM code G40.3 represents "Generalized idiopathic epilepsy and epileptic syndromes". It is a non-billable header code — use a more specific child code for billing purposes.
Is G40.3 a billable code?
No, G40.3 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under G40.3.
What chapter is G40.3 in?
G40.3 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G40.3?
G40.3 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 G40.3?
G40.3 has 2 child codes, including: G40.30 (Generalized idiopathic epilepsy, not intractable), G40.31 (Generalized idiopathic epilepsy, intractable).
What are the UMLS CUIs for G40.3?
G40.3 is linked to 1 UMLS Concept Unique Identifier: C0270850. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.