G40.019 – Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus

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

Billable code

ICD-10-CM code G40.019
Code
G40.019 (claims format: G40019)
Description
Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus
Short description
Local-rel idio epi w seiz of loc onset, ntrct, 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 › G40.0 › G40.01

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

G40.0 – Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset

Applicable to:
  • Benign childhood epilepsy with centrotemporal EEG spikes
  • Childhood epilepsy with occipital EEG paroxysms
Excludes1 (not coded here):
  • adult onset localization-related epilepsy (G40.1-, G40.2-)

Index terms for G40.019

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

Related codes in G40.01

Frequently asked questions

What is ICD-10 code G40.019?

G40.019 is the ICD-10-CM code for localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable, without status epilepticus, in the block G40-G47 (Episodic and paroxysmal disorders).

Is G40.019 a billable code?

Yes. G40.019 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does G40.019 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.