G40 |
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Epilepsy and recurrent seizures  |
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Notes |
the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
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Excludes1 |
conversion disorder with seizures (F44.5) convulsions NOS (R56.9) post traumatic seizures (R56.1) seizure (convulsive) NOS (R56.9) seizure of newborn (P90)
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Excludes2 |
hippocampal sclerosis (G93.81) mesial temporal sclerosis (G93.81) temporal sclerosis (G93.81) Todd's paralysis (G83.84)
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G40.0 |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset |
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Benign childhood epilepsy with centrotemporal EEG spikes | Childhood epilepsy with occipital EEG paroxysms |
Excludes1 |
adult onset localization-related epilepsy (G40.1-, G40.2-)
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G40.00 |
 |
Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset without intractability |
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G40.001 |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, with status epilepticus |
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G40.009 |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS |
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G40.01 |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable |
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G40.011 |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, with status epilepticus |
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G40.019 |
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Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus |
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G40.1 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures |
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Attacks without alteration of consciousness | Epilepsia partialis continua [Kozhevnikof] | Simple partial seizures developing into secondarily generalized seizures |
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G40.10 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures without intractability |
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G40.101 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus |
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G40.109 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, without status epilepticus |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures NOS |
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G40.11 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable |
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G40.111 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, with status epilepticus |
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G40.119 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable, without status epilepticus |
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G40.2 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures |
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Attacks with alteration of consciousness, often with automatisms | Complex partial seizures developing into secondarily generalized seizures |
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G40.20 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures without intractability |
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G40.201 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, with status epilepticus |
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G40.209 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures NOS |
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G40.21 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable |
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G40.211 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, with status epilepticus |
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G40.219 |
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Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus |
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G40.3 |
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Generalized idiopathic epilepsy and epileptic syndromes |
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CodeAlso |
MERRF syndrome, if applicable (E88.42)
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G40.30 |
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Generalized idiopathic epilepsy and epileptic syndromes, not intractable |
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Generalized idiopathic epilepsy and epileptic syndromes without intractability |
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G40.301 |
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Generalized idiopathic epilepsy and epileptic syndromes, not intractable, with status epilepticus |
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G40.309 |
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Generalized idiopathic epilepsy and epileptic syndromes, not intractable, without status epilepticus |
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Generalized idiopathic epilepsy and epileptic syndromes NOS |
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G40.31 |
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Generalized idiopathic epilepsy and epileptic syndromes, intractable |
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G40.311 |
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Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus |
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G40.319 |
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Generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus |
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G40.A |
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Absence epileptic syndrome |
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Childhood absence epilepsy [pyknolepsy] | Juvenile absence epilepsy | Absence epileptic syndrome, NOS |
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G40.A0 |
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Absence epileptic syndrome, not intractable |
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G40.A01 |
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Absence epileptic syndrome, not intractable, with status epilepticus |
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G40.A09 |
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Absence epileptic syndrome, not intractable, without status epilepticus |
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G40.A1 |
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Absence epileptic syndrome, intractable |
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G40.A11 |
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Absence epileptic syndrome, intractable, with status epilepticus |
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G40.A19 |
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Absence epileptic syndrome, intractable, without status epilepticus |
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G40.B |
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Juvenile myoclonic epilepsy [impulsive petit mal] |
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G40.B0 |
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Juvenile myoclonic epilepsy, not intractable |
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G40.B01 |
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Juvenile myoclonic epilepsy, not intractable, with status epilepticus |
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G40.B09 |
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Juvenile myoclonic epilepsy, not intractable, without status epilepticus |
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G40.B1 |
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Juvenile myoclonic epilepsy, intractable |
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G40.B11 |
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Juvenile myoclonic epilepsy, intractable, with status epilepticus |
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G40.B19 |
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Juvenile myoclonic epilepsy, intractable, without status epilepticus |
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G40.C |
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Lafora progressive myoclonus epilepsy |
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Lafora body disease |
CodeAlso |
, if applicable, associated conditions such as dementia (F02.8-)
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G40.C0 |
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Lafora progressive myoclonus epilepsy, not intractable |
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G40.C01 |
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Lafora progressive myoclonus epilepsy, not intractable, with status epilepticus |
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G40.C09 |
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Lafora progressive myoclonus epilepsy, not intractable, without status epilepticus |
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Lafora progressive myoclonus epilepsy NOS |
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G40.C1 |
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Lafora progressive myoclonus epilepsy, intractable |
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G40.C11 |
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Lafora progressive myoclonus epilepsy, intractable, with status epilepticus |
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G40.C19 |
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Lafora progressive myoclonus epilepsy, intractable, without status epilepticus |
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G40.4 |
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Other generalized epilepsy and epileptic syndromes |
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Epilepsy with grand mal seizures on awakening | Epilepsy with myoclonic absences | Epilepsy with myoclonic-astatic seizures | Grand mal seizure NOS | Nonspecific atonic epileptic seizures | Nonspecific clonic epileptic seizures | Nonspecific myoclonic epileptic seizures | Nonspecific tonic epileptic seizures | Nonspecific tonic-clonic epileptic seizures | Symptomatic early myoclonic encephalopathy |
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G40.40 |
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Other generalized epilepsy and epileptic syndromes, not intractable |
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Other generalized epilepsy and epileptic syndromes without intractability | Other generalized epilepsy and epileptic syndromes NOS |
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G40.401 |
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Other generalized epilepsy and epileptic syndromes, not intractable, with status epilepticus |
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G40.409 |
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Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus |
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G40.41 |
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Other generalized epilepsy and epileptic syndromes, intractable |
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G40.411 |
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Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus |
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G40.419 |
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Other generalized epilepsy and epileptic syndromes, intractable, without status epilepticus |
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G40.42 |
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Cyclin-Dependent Kinase-Like 5 Deficiency Disorder |
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CDKL5 |
UseAdditionalCode |
code, if known, to identify associated manifestations, such as: cortical blindness (H47.61-) global developmental delay (F88)
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G40.5 |
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Epileptic seizures related to external causes |
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Epileptic seizures related to alcohol | Epileptic seizures related to drugs | Epileptic seizures related to hormonal changes | Epileptic seizures related to sleep deprivation | Epileptic seizures related to stress |
CodeAlso |
, if applicable, associated epilepsy and recurrent seizures (G40.-)
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UseAdditionalCode |
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
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G40.50 |
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Epileptic seizures related to external causes, not intractable |
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G40.501 |
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Epileptic seizures related to external causes, not intractable, with status epilepticus |
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G40.509 |
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Epileptic seizures related to external causes, not intractable, without status epilepticus |
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Epileptic seizures related to external causes, NOS |
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G40.8 |
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Other epilepsy and recurrent seizures |
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Epilepsies and epileptic syndromes undetermined as to whether they are focal or generalized | Landau-Kleffner syndrome |
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G40.80 |
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Other epilepsy |
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G40.801 |
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Other epilepsy, not intractable, with status epilepticus |
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Other epilepsy without intractability with status epilepticus |
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G40.802 |
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Other epilepsy, not intractable, without status epilepticus |
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Other epilepsy NOS | Other epilepsy without intractability without status epilepticus |
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G40.803 |
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Other epilepsy, intractable, with status epilepticus |
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G40.804 |
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Other epilepsy, intractable, without status epilepticus |
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G40.81 |
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Lennox-Gastaut syndrome |
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G40.811 |
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Lennox-Gastaut syndrome, not intractable, with status epilepticus |
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G40.812 |
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Lennox-Gastaut syndrome, not intractable, without status epilepticus |
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G40.813 |
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Lennox-Gastaut syndrome, intractable, with status epilepticus |
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G40.814 |
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Lennox-Gastaut syndrome, intractable, without status epilepticus |
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G40.82 |
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Epileptic spasms |
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Infantile spasms | Salaam attacks | West's syndrome |
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G40.821 |
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Epileptic spasms, not intractable, with status epilepticus |
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G40.822 |
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Epileptic spasms, not intractable, without status epilepticus |
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G40.823 |
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Epileptic spasms, intractable, with status epilepticus |
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G40.824 |
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Epileptic spasms, intractable, without status epilepticus |
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G40.83 |
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Dravet syndrome |
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Polymorphic epilepsy in infancy (PMEI) | Severe myoclonic epilepsy in infancy (SMEI) |
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G40.833 |
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Dravet syndrome, intractable, with status epilepticus |
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G40.834 |
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Dravet syndrome, intractable, without status epilepticus |
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G40.84 |
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KCNQ2-related epilepsy |
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G40.841 |
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KCNQ2-related epilepsy, not intractable, with status epilepticus |
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G40.842 |
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KCNQ2-related epilepsy, not intractable, without status epilepticus |
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KCNQ2-related epilepsy NOS |
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G40.843 |
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KCNQ2-related epilepsy, intractable, with status epilepticus |
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G40.844 |
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KCNQ2-related epilepsy, intractable, without status epilepticus |
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G40.89 |
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Other seizures |
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Excludes1 |
post traumatic seizures (R56.1) recurrent seizures NOS (G40.909) seizure NOS (R56.9)
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G40.9 |
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Epilepsy, unspecified |
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G40.90 |
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Epilepsy, unspecified, not intractable |
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Epilepsy, unspecified, without intractability |
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G40.901 |
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Epilepsy, unspecified, not intractable, with status epilepticus |
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G40.909 |
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Epilepsy, unspecified, not intractable, without status epilepticus |
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Epilepsy NOS | Epileptic convulsions NOS | Epileptic fits NOS | Epileptic seizures NOS | Recurrent seizures NOS | Seizure disorder NOS |
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G40.91 |
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Epilepsy, unspecified, intractable |
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Intractable seizure disorder NOS |
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G40.911 |
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Epilepsy, unspecified, intractable, with status epilepticus |
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G40.919 |
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Epilepsy, unspecified, intractable, without status epilepticus |
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