G40.319 – Generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus

ICD-10-CM 2027 diagnosis code · Episodic and paroxysmal disorders

Billable code

ICD-10-CM code G40.319

Code: G40.319 (claims format: G40319)
Description: Generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus
Short description: Generalized idiopathic epilepsy, intractable, w/o stat epi
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 6. Diseases of the nervous system (G00-G99)
Block: G40-G47 Episodic and paroxysmal disorders
Parent codes: G40 › G40.3 › G40.31

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

G40 – Epilepsy and recurrent seizures

Excludes1 (not 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)

Notes:

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

G40.3 – Generalized idiopathic epilepsy and epileptic syndromes

Code also:

MERRF syndrome, if applicable (E88.42)

Index terms for G40.319

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in G40.31

G40.311 – Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticusBillable

Frequently asked questions

What is ICD-10 code G40.319?

G40.319 is the ICD-10-CM code for generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus, in the block G40-G47 (Episodic and paroxysmal disorders).

Is G40.319 a billable code?

Yes. G40.319 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does G40.319 belong to?

It belongs to category G40 – Epilepsy and recurrent seizures.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.