G40.21
Non-billableLocalization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable
G40.21 is the ICD-10-CM code for Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable. It is a non-billable category code — use a more specific child code such as G40.211 for billing.
G00-G99 Diseases of the nervous system
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Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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