ICD-10-CM Code G40.309

Generalized idiopathic epilepsy and epileptic syndromes, not intractable, without status epilepticus

Version 2021 Billable Code

Valid for Submission

G40.309 is a billable code used to specify a medical diagnosis of generalized idiopathic epilepsy and epileptic syndromes, not intractable, without status epilepticus. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code G40.309 might also be used to specify conditions or terms like action myoclonus renal failure syndrome, atypical absence seizure, benign familial neonatal seizures, non-refractory, benign myoclonic epilepsy in infancy, benign neonatal convulsions, benign neonatal familial convulsions, etc

ICD-10:G40.309
Short Description:Gen idiopathic epilepsy, not intractable, w/o stat epi
Long Description:Generalized idiopathic epilepsy and epileptic syndromes, not intractable, without status epilepticus

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G40.309:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Generalized idiopathic epilepsy and epileptic syndromes NOS

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code G40.309 are found in the index:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Action myoclonus renal failure syndrome
  • Atypical absence seizure
  • Benign familial neonatal seizures, non-refractory
  • Benign myoclonic epilepsy in infancy
  • Benign neonatal convulsions
  • Benign neonatal familial convulsions
  • Childhood absence epilepsy
  • Clonic seizure
  • Complex partial seizure evolving to generalized seizure
  • Complex partial seizure evolving to generalized seizure
  • Coordinate convulsion
  • Early-onset Lafora body disease
  • Early-onset spastic ataxia, myoclonic epilepsy, neuropathy syndrome
  • Epilepsy with grand mal seizures on awakening
  • Familial neonatal seizures
  • Generalized convulsive epilepsy
  • Generalized epilepsy
  • Generalized non-convulsive epilepsy
  • Generalized-onset seizures
  • Idiopathic generalized epilepsy
  • Idiopathic generalized epilepsy, non-refractory
  • Infantile neuronal ceroid lipofuscinosis
  • Jeavons syndrome
  • Juvenile absence epilepsy
  • Juvenile myoclonic epilepsy
  • Lafora disease
  • Myoclonic epilepsy of early childhood
  • Myoclonic epilepsy with ragged red fibers
  • Myoclonic seizure
  • Neuronal ceroid lipofuscinosis
  • O/E - fit/convulsion
  • O/E - grand mal fit
  • Partial seizure evolving to secondary generalized seizure
  • Partial seizure evolving to secondary generalized seizure
  • Progressive myoclonic epilepsy
  • Progressive myoclonic epilepsy type 3
  • Progressive myoclonic epilepsy type 5
  • Progressive myoclonic epilepsy type 6
  • Progressive myoclonic epilepsy type 8
  • Progressive myoclonic epilepsy with dystonia
  • Retropulsion petit mal
  • Simple partial seizure evolving to complex partial seizure evolving to generalized seizure
  • Simple partial seizure evolving to secondary generalized seizure
  • Simple partial seizure evolving to secondary generalized seizure
  • Tonic-clonic epilepsy
  • Tonic-clonic seizure
  • Unverricht-Lundborg syndrome

Convert G40.309 to ICD-9

  • 345.10 - Gen cnv epil w/o intr ep (Approximate Flag)

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Episodic and paroxysmal disorders (G40-G47)
      • Epilepsy and recurrent seizures (G40)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Epilepsy

Epilepsy is a brain disorder that causes people to have recurring seizures. The seizures happen when clusters of nerve cells, or neurons, in the brain send out the wrong signals. People may have strange sensations and emotions or behave strangely. They may have violent muscle spasms or lose consciousness.

Epilepsy has many possible causes, including illness, brain injury, and abnormal brain development. In many cases, the cause is unknown.

Doctors use brain scans and other tests to diagnose epilepsy. It is important to start treatment right away. There is no cure for epilepsy, but medicines can control seizures for most people. When medicines are not working well, surgery or implanted devices such as vagus nerve stimulators may help. Special diets can help some children with epilepsy.

NIH: National Institute of Neurological Disorders and Stroke

  • Brain surgery (Medical Encyclopedia)
  • EEG (Medical Encyclopedia)
  • Epilepsy (Medical Encyclopedia)
  • Epilepsy - children (Medical Encyclopedia)
  • Epilepsy - children - discharge (Medical Encyclopedia)
  • Epilepsy or seizures - discharge (Medical Encyclopedia)

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