G40.84
Non-billableKCNQ2-related epilepsy
KCNQ2-related epilepsy
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- hippocampal sclerosis (G93.81)
- mesial temporal sclerosis (G93.81)
- temporal sclerosis (G93.81)
- Todd's paralysis (G83.84)
Child Codes (4)
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for kcnq2-related epilepsy?
The ICD-10-CM code for kcnq2-related epilepsy is G40.84. The full clinical description is "KCNQ2-related epilepsy". G40.84 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G40.84 mean?
ICD-10-CM code G40.84 represents "KCNQ2-related epilepsy". It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G40.84 a billable code?
No, G40.84 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under G40.84.
What chapter is G40.84 in?
G40.84 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G40.84?
G40.84 has Excludes1 notes indicating codes that cannot be used together with it, including: conversion disorder with seizures (F44.5); convulsions NOS (R56.9); post traumatic seizures (R56.1); and 2 more.
What are the subcategories under G40.84?
G40.84 has 4 child codes, including: G40.841 (KCNQ2-related epilepsy, not intractable, with stat epi), G40.842 (KCNQ2-related epilepsy, not intractable, without stat epi), G40.843 (KCNQ2-related epilepsy, intractable, with status epilepticus), G40.844 (KCNQ2-related epilepsy, intractable, without stat epi).
What are the UMLS CUIs for G40.84?
G40.84 is linked to 1 UMLS Concept Unique Identifier: C5926676. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.