ICD-10 Code G40.B0 – Juvenile myoclonic epilepsy, not intractable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G40.B0 – Juvenile myoclonic epilepsy, not intractable
What it is
Use this code for juvenile myoclonic epilepsy, a generalized epilepsy syndrome that begins in adolescence or young adulthood. It identifies cases that are not documented as intractable.
Clinical signs
Typical features include brief myoclonic jerks, often soon after waking, and generalized tonic-clonic seizures. Clinical features vary; refer to documentation for seizure type and age of onset.
When to use this code
Assign G40.B0 when the record specifically states juvenile myoclonic epilepsy and does not describe it as intractable or refractory. Use it for confirmed epilepsy syndrome documentation, not for a single isolated seizure or an unspecified convulsive disorder. If the note only says “epilepsy” or “seizure disorder,” check documentation for a more specific diagnosis.
Do not use for
Do not use this code for intractable juvenile myoclonic epilepsy, other epilepsy syndromes, or unspecified epilepsy. Check documentation if the seizure type, syndrome, or control status is unclear.
Coding tip
Look for the exact phrase “juvenile myoclonic epilepsy” and verify that intractable or refractory is not documented before assigning G40.B0.