G40.843: KCNQ2-related epilepsy, intractable, with status epilepticus
G40.843 is the billable ICD-10-CM diagnosis code for KCNQ2-related epilepsy, intractable, with status epilepticus. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code G40.843?
G40.843 is the ICD-10-CM diagnosis code for KCNQ2-related epilepsy, intractable, with status epilepticus. It belongs to category G40 (Epilepsy and recurrent seizures).
Is G40.843 a billable code?
Yes. G40.843 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does G40.843 belong to?
G40.843 is part of ICD-10-CM category G40 — Epilepsy and recurrent seizures, which has 116 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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