G40.0 vs G40.2
G40.0 (Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset) compared with G40.2 (Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. G40.0 carries an Excludes1 note covering G40.2: “adult onset localization-related epilepsy (G40.1-, G40.2-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| G40.0Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset | G40.2Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset is a non-billable ICD-10-CM category code (G40.0). | Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures is a non-billable ICD-10-CM category code (G40.2). |
| Includes | Benign childhood epilepsy with centrotemporal EEG spikes Childhood epilepsy with occipital EEG paroxysms | Attacks with alteration of consciousness, often with automatisms Complex partial seizures developing into secondarily generalized seizures |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources