ICD-10-CM › G00-G99 › G40-G47 › G40.8 Other epilepsy and recurrent seizures › G40.83

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2021 onwards. It has never been valid for submission on its own.

Submit one of these 2 more specific codes instead:

• G40.833 Dravet syndrome, intractable, with status epilepticus
• G40.834 Dravet syndrome, intractable, without status epilepticus

What has happened to this code

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from G40 Epilepsy and recurrent seizures

Excludes1 - never coded here

• conversion disorder with seizures (F44.5)
• convulsions NOS (R56.9)
• post traumatic seizures (R56.1)
• seizure (convulsive) NOS (R56.9)
• seizure of newborn (P90)

Excludes2 - not included here

• hippocampal sclerosis (G93.81)
• mesial temporal sclerosis (G93.81)
• temporal sclerosis (G93.81)
• Todd's paralysis (G83.84)

Note

• the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

• Seizure
• Comatose
• Convulsive
• Paramnesia
• Convulsions
• Unconscious
• Loss > memory
• Pseudotetanus
• Lafora disease
• Fit > epileptic
• Coma > epileptic
• Lack of > memory
• Morbus > caducus
• Disorder > seizure
• Postsurgery status
• Seizure > disorder
• State > convulsive
• Stroke > epileptic
• Morbus > comitialis
• Seizure > epileptic
• Disturbance > memory
• Seizure > convulsive
• Syndrome > epileptic
• Disorder > convulsive
• Convulsions > epileptic
• Attack, attacks > epileptic
• Status > absence, epileptic
• Fugue > postictal in epilepsy
• Amnesia > postictal in epilepsy
• Disease, diseased > Lafora body
• Status > epileptic, epilepticus
• Memory disturbance, lack or loss
• Status > convulsivus idiopathicus
• Convulsions > infantile > epilepsy
• Dysrhythmia > cerebral or cortical
• Convulsions > epileptiform, epileptoid
• Symptoms NEC > involving > awareness > coma
• Myoclonus, myoclonic, myoclonia > epileptica
• Symptoms NEC > involving > awareness > amnesia
• Myoclonus, myoclonic, myoclonia > epilepsy > familial

Showing 40 of 46 index phrases.

Codes in the same group

Code	Description	Status
G40.80	Other epilepsy	Not billable
G40.81	Lennox-Gastaut syndrome	Not billable
G40.82	Epileptic spasms	Not billable
G40.84	KCNQ2-related epilepsy	Not billable
G40.89	Other seizures	Valid