G40.C19
ICD-10-CMLafora progressive myoclonus epilepsy, intractable, without status epilepticus
This code signifies a severe, inherited neurological disorder characterized by progressive myoclonus (brief, involuntary muscle jerks), generalized tonic-clonic seizures, and cognitive decline. It specifically denotes the intractable form of Lafora disease, meaning the seizures are difficult to control with standard medication, but without the presence of status epilepticus.
Apply this code when documentation clearly indicates a diagnosis of Lafora progressive myoclonus epilepsy that is resistant to treatment. The patient's medical record should specify the intractable nature of the epilepsy and explicitly state the absence of status epilepticus during the encounter.
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