G40.319

Generalized idiopathic epilepsy and epileptic syndromes, intractable, without status epilepticus

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 17 never code together

G40code

Excludes1

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

Excludes2

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

G00-G99chapter

Excludes2

certain conditions originating in the perinatal period (P04-P96)P04-P96
certain infectious and parasitic diseases (A00-B99)A00-B99
complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 2

G40.3code

Code also

MERRF syndrome, if applicable (E88.42)E88.42

G40code

Notes

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

Index entries leading here 1

Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure) G40.909
- generalized
  - idiopathic G40.309
    - intractable G40.319
      - without status epilepticus G40.319
- syndromes
  - generalized
    - idiopathic G40.309
      - intractable G40.319
        
        without status epilepticus G40.319

Alongside this code 1 same parent — G40.31

G40.311 Generalized idiopathic epilepsy, intractable, w stat epi

Medications 3

25 Epilepsy, Generalized drugs 22 Epileptic Syndromes drugs 16 Status Epilepticus drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC79 CMS28HCC201 ESRD21HCC79 ESRD24HCC79 RX08HCC163

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: G40.31
Block: G40-G47
Siblings: 1

Present FY2024–FY2027.