Seizures Unspecified ICD-10-CM Codes

Seizures Unspecified ICD-10-CM Codes

Read this short guide and learn about seizures unspecified ICD codes you can use,

By Joshua Napilay on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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What seizures unspecified ICD codes can I use?

When selecting seizure unspecified ICD code, only a limited number of options are available. Most seizure-related ICD-10 codes provide specific designations, indicating the particular type of epilepsy or non-epilepsy condition causing the seizures. It's important to note that seizures are not exclusive to epilepsy; other underlying issues can cause them. Since this guide focuses on unspecified codes, we will list ICD-10 codes that include "unspecified" in their name. These codes are tied to specific problems that can cause or are tied to seizures:

  1. G40.909 - Epilepsy, unspecified, not intractable, without status epilepticus

This ICD-10 code is meant to be used on a patient confirmed to have epilepsy. The specific epilepsy isn’t specified. Epilepsy is also not intractable, meaning it can be managed with medication. The patient also doesn’t have status epilepticus. These are seizures that last for more than five minutes, and they can happen in close intervals. Plus, the patient is unconscious in between each one.

  1. G40.919 - Epilepsy, unspecified, intractable, without status epilepticus

This is the same as Item 1, but this time, epilepsy is intractable, so it can’t be completely managed with medicine.

  1. E66.9 - Obesity, unspecified

This ICD-10 code is meant to be used on a patient confirmed to be obese. Obesity can increase the likelihood of epilepsy.

  1. F10.239 - Alcohol dependence with withdrawal, unspecified

This ICD-10 code is meant to be used on a patient confirmed to have an alcohol dependence, and they’re experiencing withdrawal symptoms. People experiencing alcohol withdrawal can experience seizures.

  1. B99.9 - Unspecified infectious disease

This ICD-10 code is meant to be used on a patient confirmed to have an unspecified infectious disease. This disease could be anything! In relation to the topic of seizures, it’s best used on a disease that can cause seizures.

  1. E88.9 - Metabolic disorder, unspecified

This ICD-10 code is meant to be used on a patient confirmed to have a metabolic disorder. Metabolic disorders can cause seizures.

  1. G04.90 - Encephalitis and encephalomyelitis, unspecified

This ICD-10 code is meant to be used on a patient confirmed to have encephalitis and encephalomyelitis. These conditions can cause seizures.

  1. I62.9 - Nontraumatic intracranial hemorrhage, unspecified

This ICD-10 code is meant to be used on a patient confirmed to have a non-traumatic intracranial hemorrhage. Having seizures can cause this type of bleeding or exacerbate an intracerebral hemorrhage and increase intracranial pressure.

Are these seizures unspecified codes billable?

Yes. ICD-10 codes that are labeled as unspecified are valid and billable, though if professionals can find a more specific code, it’s encouraged for them to use a specific one over unspecified ones.

Clinical information about seizures:

A seizure is a medical condition characterized by the brain having an uncontrollable albeit temporary surge in electrical activity. This sudden surge causes the brain cells to keep firing signals to other brain cells, and in turn, to other body parts. This surge can make a person pass out, convulse, and cause body parts to move uncontrollably.

Seizures can either be provoked or unprovoked. Current medical conditions and other health-related issues, like alcohol withdrawals, high fevers, a metabolic disorder, can cause provoked seizures. 

Meanwhile, provoked seizures are the most common type. As for unprovoked seizures, these just happen out of the blue. These can also be the late effects of certain problems, like several days or weeks after sustaining a head injury due to an accident or a neurological problem like a stroke.

Epilepsy is the most notable cause of seizures. This brain condition makes those who have it more likely to have unprovoked seizure episodes. One of the worst things about such seizures is that one becomes more prone to having another unprovoked seizure every time they have one.

Synonyms include:

  • Epileptic seizure
  • Posttraumatic seizure
  • Alcohol withdrawal-induced convulsion
  • Situation-related seizures
  • Acute seizure due to infection of central nervous system
  • Seizures complicating infection
  • Seizures due to metabolic disorder
  • Seizures complicating intracranial hemorrhage
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Commonly asked questions

No. Seizures are symptoms of certain problems, so it’s best to use the aforementioned ICD codes or similar ones that account for seizures. Many conditions and situations can cause seizures, so it’s best to use an ICD-10 code that’s specific to your patient.

Stroke, being exposed to poison/toxins, metabolic problems, infections, fevers, brain tumors, aneurysms, concussions, and high fevers to name a few.

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Through anti-seizure medication, brain and vagal nerve stimulation, and adopting a ketogenic diet.

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