ICD-10-CM Code G40: Epilepsy and recurrent seizures and Related Diagnosis Codes.


The ICD-10-CM (the International Classification of Diseases, Tenth Revision, Clinical Modification) is a standardized coding system used when classifying diseases and medical conditions. Healthcare providers report these codes on Medical claims when diagnosing patient care.

Explore ICD-10-CM codes, organized by chapters based on body systems and medical conditions, as outlined in the International Classification of Diseases, Tenth Revision, Clinical Modification.

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A categorized list of ICD-10-CM codes organized by chapters based on body systems or medical conditions, according to the International Classification of Diseases, Tenth Revision, Clinical Modification.

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  • G40 - Epilepsy and recurrent seizures
    • G40.0 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
      • G40.00 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable
        • G40.001 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, with status epilepticus
        • G40.009 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus
      • G40.01 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable
        • G40.011 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, with status epilepticus
        • G40.019 - Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus
    • G40.1 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
      • G40.10 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable
        • G40.101 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus
        • G40.109 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, without status epilepticus
      • G40.11 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable
        • G40.111 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, with status epilepticus
        • G40.119 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, without status epilepticus
    • G40.2 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
      • G40.20 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable
        • G40.201 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, with status epilepticus
        • G40.209 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus
      • G40.21 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable
        • G40.211 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, with status epilepticus
        • G40.219 - Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus
    • G40.3 - Generalized idiopathic epilepsy and epileptic syndromes
      • G40.30 - Generalized idiopathic epilepsy and epileptic syndromes, not intractable
        • G40.301 - Generalized idiopathic epilepsy and epileptic syndromes, not intractable, with status epilepticus
        • G40.309 - Generalized idiopathic epilepsy and epileptic syndromes, not intractable, without status epilepticus
      • G40.31 - Generalized idiopathic epilepsy and epileptic syndromes, intractable
        • G40.311 - Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus
        • G40.319 - Generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus
    • G40.A - Absence epileptic syndrome
      • G40.A0 - Absence epileptic syndrome, not intractable
        • G40.A01 - Absence epileptic syndrome, not intractable, with status epilepticus
        • G40.A09 - Absence epileptic syndrome, not intractable, without status epilepticus
      • G40.A1 - Absence epileptic syndrome, intractable
        • G40.A11 - Absence epileptic syndrome, intractable, with status epilepticus
        • G40.A19 - Absence epileptic syndrome, intractable, without status epilepticus
    • G40.B - Juvenile myoclonic epilepsy [impulsive petit mal]
      • G40.B0 - Juvenile myoclonic epilepsy, not intractable
        • G40.B01 - Juvenile myoclonic epilepsy, not intractable, with status epilepticus
        • G40.B09 - Juvenile myoclonic epilepsy, not intractable, without status epilepticus
      • G40.B1 - Juvenile myoclonic epilepsy, intractable
        • G40.B11 - Juvenile myoclonic epilepsy, intractable, with status epilepticus
        • G40.B19 - Juvenile myoclonic epilepsy, intractable, without status epilepticus
    • G40.C - Lafora progressive myoclonus epilepsy
      • G40.C0 - Lafora progressive myoclonus epilepsy, not intractable
        • G40.C01 - Lafora progressive myoclonus epilepsy, not intractable, with status epilepticus
        • G40.C09 - Lafora progressive myoclonus epilepsy, not intractable, without status epilepticus
      • G40.C1 - Lafora progressive myoclonus epilepsy, intractable
        • G40.C11 - Lafora progressive myoclonus epilepsy, intractable, with status epilepticus
        • G40.C19 - Lafora progressive myoclonus epilepsy, intractable, without status epilepticus
    • G40.4 - Other generalized epilepsy and epileptic syndromes
      • G40.40 - Other generalized epilepsy and epileptic syndromes, not intractable
        • G40.401 - Other generalized epilepsy and epileptic syndromes, not intractable, with status epilepticus
        • G40.409 - Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus
      • G40.41 - Other generalized epilepsy and epileptic syndromes, intractable
        • G40.411 - Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus
        • G40.419 - Other generalized epilepsy and epileptic syndromes, intractable, without status epilepticus
      • G40.42 - Cyclin-Dependent Kinase-Like 5 Deficiency Disorder
    • G40.5 - Epileptic seizures related to external causes
      • G40.50 - Epileptic seizures related to external causes, not intractable
        • G40.501 - Epileptic seizures related to external causes, not intractable, with status epilepticus
        • G40.509 - Epileptic seizures related to external causes, not intractable, without status epilepticus
    • G40.8 - Other epilepsy and recurrent seizures
      • G40.80 - Other epilepsy
        • G40.801 - Other epilepsy, not intractable, with status epilepticus
        • G40.802 - Other epilepsy, not intractable, without status epilepticus
        • G40.803 - Other epilepsy, intractable, with status epilepticus
        • G40.804 - Other epilepsy, intractable, without status epilepticus
      • G40.81 - Lennox-Gastaut syndrome
        • G40.811 - Lennox-Gastaut syndrome, not intractable, with status epilepticus
        • G40.812 - Lennox-Gastaut syndrome, not intractable, without status epilepticus
        • G40.813 - Lennox-Gastaut syndrome, intractable, with status epilepticus
        • G40.814 - Lennox-Gastaut syndrome, intractable, without status epilepticus
      • G40.82 - Epileptic spasms
        • G40.821 - Epileptic spasms, not intractable, with status epilepticus
        • G40.822 - Epileptic spasms, not intractable, without status epilepticus
        • G40.823 - Epileptic spasms, intractable, with status epilepticus
        • G40.824 - Epileptic spasms, intractable, without status epilepticus
      • G40.83 - Dravet syndrome
        • G40.833 - Dravet syndrome, intractable, with status epilepticus
        • G40.834 - Dravet syndrome, intractable, without status epilepticus
      • G40.84 - KCNQ2-related epilepsy
        • G40.841 - KCNQ2-related epilepsy, not intractable, with status epilepticus
        • G40.842 - KCNQ2-related epilepsy, not intractable, without status epilepticus
        • G40.843 - KCNQ2-related epilepsy, intractable, with status epilepticus
        • G40.844 - KCNQ2-related epilepsy, intractable, without status epilepticus
      • G40.89 - Other seizures
    • G40.9 - Epilepsy, unspecified
      • G40.90 - Epilepsy, unspecified, not intractable
        • G40.901 - Epilepsy, unspecified, not intractable, with status epilepticus
        • G40.909 - Epilepsy, unspecified, not intractable, without status epilepticus
      • G40.91 - Epilepsy, unspecified, intractable
        • G40.911 - Epilepsy, unspecified, intractable, with status epilepticus
        • G40.919 - Epilepsy, unspecified, intractable, without status epilepticus

Note: The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes are developed and maintained by the Centers for Disease Control and Prevention (CDC). CDC's National Center for Health Statistics (NCHS) is responsible for the clinical modification of ICD-10 for use in the United States. The World Health Organization (WHO), which owns and publishes ICD-10, authorized NCHS to develop ICD-10-CM. All modifications to ICD-10 must conform to WHO's established ICD structure and conventions. All rights are reserved by the respective entities.