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HomeICD-10 CodesG40
ICD-10-CM
Billable

G40

Classification
Category:
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Coding Guidance
Coding Guidance G40 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.
Excludes 1
From
  • conversion disorder with seizures ( F44.5 )
  • convulsions NOS ( R56.9 )
  • post traumatic seizures ( R56.1 )
  • seizure (convulsive) NOS ( R56.9 )
  • seizure of newborn ( P90 )
Excludes 2
From
  • hippocampal sclerosis ( G93.81 )
  • mesial temporal sclerosis ( G93.81 )
  • temporal sclerosis ( G93.81 )
  • Todd's paralysis ( G83.84 )
From
  • 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 )

More Specific Codes

G40.0
Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset G40.0
G40.1
Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures G40.1
G40.2
Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures G40.2
G40.3
Generalized idiopathic epilepsy and epileptic syndromes G40.3
G40.A
Absence epileptic syndrome G40.A
G40.B
Juvenile myoclonic epilepsy [impulsive petit mal] G40.B
G40.C
Lafora progressive myoclonus epilepsy G40.C
G40.4
Other generalized epilepsy and epileptic syndromes G40.4
G40.5
Epileptic seizures related to external causes G40.5
G40.8
Other epilepsy and recurrent seizures G40.8
G40.9
Epilepsy, unspecified G40.9
G00-G99
G00-G99 - Diseases of the nervous system

External Resources

2025 ICD-10 guidelines from CMS.gov