ICD-10 Diagnosis Code G40.409

Oth generalized epilepsy, not intractable, w/o stat epi

Diagnosis Code G40.409

ICD-10: G40.409
Short Description: Oth generalized epilepsy, not intractable, w/o stat epi
Long Description: Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus
This is the 2019 version of the ICD-10-CM diagnosis code G40.409

Valid for Submission
The code G40.409 is valid for submission for HIPAA-covered transactions.

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

Information for Medical Professionals

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Akinetic seizure without atonia
  • Atonic epilepsy
  • Atonic seizure
  • Atonic seizure, non-refractory
  • Benign adult familial myoclonic epilepsy
  • Clonic seizure
  • Clonic seizure, non-refractory
  • Cryptogenic generalized epilepsy
  • Cryptogenic myoclonic epilepsy
  • Depletion of mitochondrial DNA
  • Early infantile epileptic encephalopathy with suppression bursts
  • Early infantile epileptic encephalopathy with suppression bursts
  • Early infantile epileptic encephalopathy, non-refractory
  • Early myoclonic encephalopathy
  • Early myoclonic encephalopathy, non-refractory
  • Epileptic encephalopathy
  • Epileptic seizure
  • Epileptic seizure
  • Epileptic seizure
  • Epileptic seizure
  • Epileptic seizure
  • Epileptic seizure
  • Epileptic seizures - akinetic
  • Epileptic seizures - atonic
  • Epileptic seizures - clonic
  • Epileptic seizures - myoclonic
  • Epileptic seizures - tonic
  • Eyelid myoclonus with absences
  • First generalized onset seizure
  • Generalized convulsive epilepsy
  • Generalized convulsive epilepsy, non-refractory
  • Generalized epilepsy with febrile seizures plus
  • Generalized epilepsy with febrile seizures plus, non-refractory
  • Generalized seizure
  • Idiopathic myoclonic epilepsy
  • Long atonic seizure
  • Myoclonic absence epilepsy
  • Myoclonic absence epilepsy, non-refractory
  • Myoclonic astatic epilepsy
  • Myoclonic astatic epilepsy, non-refractory
  • Myoclonic encephalopathy
  • Myoclonic epilepsy - ragged red fibers
  • Myoclonic epilepsy myopathy sensory ataxia
  • Myoclonic seizure, non-refractory
  • O/E - petit mal fit
  • Photogenic epilepsy
  • Pitt-Hopkins syndrome
  • Post infectious grand mal epilepsy
  • Progressive myoclonic epilepsy
  • Progressive myoclonic epilepsy
  • Progressive myoclonus epilepsy with ataxia
  • Refractory myoclonic epilepsy
  • Salaam spasm
  • Secondarily generalized seizures
  • Severe myoclonic epilepsy in infancy
  • Severe myoclonic epilepsy in infancy, non-refractory
  • Single epileptic seizure
  • Single seizure
  • Spinal muscular atrophy with progressive myoclonic epilepsy
  • Symptomatic generalized epilepsy
  • Symptomatic generalized epilepsy
  • Symptomatic myoclonic epilepsy
  • Tonic seizure
  • Tonic seizures, non-refractory
  • Tonic-clonic seizure
  • Tonic-clonic seizure
  • Tonic-clonic seizure, non-refractory
  • Witnessed epileptic seizure

Information for Patients


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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