G40.21

Hierarchy

Where G40.21 sits in the official hierarchy. Each level is the code it is classified under.

1. G40 Epilepsy and recurrent seizures
2. G40.2 Parent Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
3. G40.21 This code Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

• G40.211 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, with status epilepticus Billable
• G40.219 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable, without status epilepticus Billable

Version History

How G40.21 appears in each release imported from the official files, newest first.

1. FY 2027 Effective October 1, 2026

   Current

   Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable

2. FY 2026 Effective October 1, 2025

   Unchanged

   Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable