Seizure Disorder ICD-10-CM Codes | 2023

What ICD-10 Codes are Used for Seizure Disorder?

Check below for a list of the ICD codes for seizure disorder you can use when coding or billing, depending on the type and complication, if any. 

Seizures

• R56.1: Post-traumatic seizures

Convulsions

• R56.00: Simple febrile convulsions
• R56.01. Complex febrile convulsions
• R56.9: Unspecified convulsions

Epilepsy

• G40.0 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
• G40.1 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
• G40.2 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
• G40.3 - Generalized idiopathic epilepsy and epileptic syndromes
• G40.4 - Other generalized epilepsy and epileptic syndromes
• G40.5 - Epileptic seizures related to external causes
• G40.8 - Other epilepsy and recurrent seizures
• G40.9 - Epilepsy, unspecified
• G40.A - Absence epileptic syndrome
• G40.B - Juvenile myoclonic epilepsy [impulsive petit mal]

Note that there are more specific codes under G40.0 to G40.B.

Which Seizure Disorder ICD codes are Billable? 

R56.1, R56.00, R56.01, R56.9 and more specific codes under G40.0 to G40.B are billable. 

Clinical Information

• Seizures are sudden bursts of electrical activity that can cause changes in muscle tone, movement, awareness, consciousness, or sensations. 
• There are two main types of seizures: focal/partial and generalized-onset. A seizure fall under one or the other category depending on the location, severity, or cause. 
• Someone is having a seizure when they lose consciousness, wake up confused, have muscle spasms, froth at the mouth, clench teeth, bite their tongue, lose bladder or bowel function, make unusual noises, and fall. 
• Some causes may be a brain infection/injury, substance/alcohol use/withdrawal, epilepsy, fever, head trauma, stroke, brain tumor, low blood glucose levels, and electric shock. It’s also possible that having seizures is genetic. 
• Short-term effects on patients are injury. Meanwhile, long-term effects, especially prolonged, are mental health problems, coma, or premature death. 
• To diagnose a seizure disorder, a practitioner may ask for one’s medical history, including symptoms before the seizure, and other tests such as blood tests, spinal tap, toxicology, EEG, CT scans, and MRI scans. 
• Treatments include a change in diet and medication. However, if those two don’t worry, practitioners may recommend brain surgery and nerve stimulation. 

Synonyms Include:

• Posttraumatic seizure
• Simple partial seizure with motor dysfunction
• Lennox-Gastaut syndrome
• Dravet syndrome
• Auditory seizure