Seizures ICD-10-CM Codes

Seizures ICD-10-CM Codes

Learn about some of the ICD-10-CM codes for seizures that you can use through this guide.

By Matt Olivares on Aug 8, 2025.

Fact Checked by Karina Jimenea.

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What ICD-10 codes are used for seizures?

Seizures have diverse manifestations and underlying causes. Here are some of the leading variety of seizure ICD codes for accurate diagnosis, including epileptic seizures-related codes:

  • R56.1 - Post traumatic seizures: This is used when the patient is confirmed to post-traumatic seizures.
  • G40.89 - Other seizures: This is used when the patient has a type of seizure that doesn't have a specific ICD 10 code.
  • G40.909 - Epilepsy, unspecified, not intractable, without status epilepticus: This is used for generalized epileptic conditions that are not specified further, and they are not intractable (not drug-resistant), and without status epilepticus (prolonged seizures or repeated seizures without regaining consciousness).
  • G40.901 - Epilepsy, unspecified, not intractable, with status epilepticus: Same as above but with status epilepticus this time.
  • G40.821 - Epileptic spasms, not intractable, with status epilepticus: This is used when a patient experiences treatable (not intractable) epileptic spasms that occur with status epilepticus, a prolonged or repeated seizure state.
  • G40.823 - Epileptic spasms, intractable, with status epilepticus: G40.823 is used when a patient has hard-to-control (intractable) epileptic spasms that occur with status epilepticus requiring more intensive or resistant treatment.
  • R56.9 - Unspecified convulsions: Convulsions can occur during seizures. This code covers instances of convulsions that do not have a specified cause or type.
  • G40.311 - Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus: This is for generalized idiopathic epilepsy and epileptic syndromes, meaning the cause is unknown.
  • G40.211 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, with status epilepticus: This is for epilepsy that occurs only in a certain part of the brain.

Which seizure ICD codes are billable?

All of the aforementioned ICD-10 codes are valid and billable.

Clinical information

Seizures are symptoms of a brain problem characterized by a sudden, uncontrolled electrical disturbance in the brain.

  • They can cause changes in behavior, movements, feelings, and levels of consciousness.
  • Having a single seizure doesn't mean you have epilepsy. At least two unprovoked seizures are generally required for an epilepsy diagnosis.
  • Treatment involves medications or sometimes surgery to reduce or stop seizures.

Synonyms include

  • Epileptic attack
  • Generalized epilepsy
  • Other generalized epilepsy
  • Simple partial seizures NOS
  • Epileptic syndromes, undetermined cause
  • Idiopathic epilepsy
  • Convulsions
  • Epileptic seizure
  • Paroxysm

Popular search terms for seizures ICD 10 codes

  • Seizures ICD-10 code
  • ICD-10 seizures
  • Seizures diagnosis codes
  • ICD-10 codes for seizures

Commonly asked questions

Stress can induce seizures in people with epilepsy and some without known epilepsy. However, not everyone reacts to stress similarly, and many people have seizures unaffected by stress.

Stay calm, loosen anything around the person's neck, do not insert anything into their mouth, clear the area around them, and place them on their side as soon as the seizure stops. Seek emergency medical help if the seizure lasts longer than 5 minutes.

Epilepsy most commonly leads to recurrent seizures and can often be managed with medications. In some cases, dietary changes or surgery may be effective. Some children outgrow their epilepsy, and some adults may see an improvement or complete cessation of their seizures over time. However, for many, epilepsy is a lifelong condition that requires ongoing management. 

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