243 Like petit mal seizures, ICD-10-CM does not include a specific code for grand mal seizure but directs again to category G40.4. Categories of Epilepsy Category G40 includes codes for epilepsy and recurrent seizures. Categories are further divided into subcategories for specific localization-related, generalized, and other specified forms of epilepsy. The subcategories are G40.0 Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset (includes benign childhood epilepsy with centrotemporal EEG spikes) G40.1 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures (includes epilepsia partialis continua) G40.2 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures G40.3 Generalized idiopathic epilepsy and epileptic syndromes G40.A Absence epileptic syndrome G40.B Juvenile myoclonic epilepsy (impulsive petit mal) G40.5 Epileptic seizures related to external causes G40.8 Other epilepsy and recurrent seizures (includes Lennox-Gastaut and Landau-Kleffner syndromes) G40.9 Epilepsy, unspecified As previously noted, codes in each subcategory specify the epilepsy status as intractable or not intractable and with or without status epilepticus. Convulsions and Seizures Convulsions are classified as symptoms in ICD-10-CM except when further described as illustrated in the excerpt from the alphabetic index that follows. Note that febrile convulsions with status epilepticus are reported as unspecified epilepsy, not intractable, with status epilepticus (G40.901). Convulsions (see also Seizure[s]) R56.9 - febrile R56.00 - - with status epilepticus G40.901 - - complex R56.01 - - - with status epilepticus G40.901 - - simple R56.00 - hysterical F44.5 - infantile P90 - - epilepsy see Epilepsy (continued on page 244)
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