KCNQ2-related epilepsy
- G40.84 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- ICD-10-CM G40.84 is a new 2025 ICD-10-CM code that became effective on October 1, 2024.
- This is the American ICD-10-CM version of G40.84 – other international versions of ICD-10 G40.84 may differ.
ICD-10-CM Coding Rules
- G40.84 is applicable to pediatric patients aged 0 – 17 years inclusive.
The following code(s) above G40.84 contain annotation back-references
that may be applicable to G40.84:
- G00-G99 Diseases of the nervous system
- G40 Epilepsy and recurrent seizures
- G40.8 Other epilepsy and recurrent seizures
Code History
- 2025 (effective 10/1/2024): New code