G40
Epilepsy and recurrent seizures
- Release
- FY 2027
- Effective
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files.
Excludes1
conversion disorder with seizures ( F44.5 )
Excludes1
convulsions NOS ( R56.9 )
Excludes1
post traumatic seizures ( R56.1 )
Excludes1
seizure (convulsive) NOS ( R56.9 )
Excludes1
seizure of newborn ( P90 )
Excludes2
hippocampal sclerosis ( G93.81 )
Excludes2
mesial temporal sclerosis ( G93.81 )
Excludes2
temporal sclerosis ( G93.81 )
Excludes2
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
More Specific Codes
11 codes under G40
- G40.0 Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset Has subcodes
- G40.1 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures Has subcodes
- G40.2 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures Has subcodes
- G40.3 Generalized idiopathic epilepsy and epileptic syndromes Has subcodes
- G40.A Absence epileptic syndrome Has subcodes
- G40.B Juvenile myoclonic epilepsy [impulsive petit mal] Has subcodes
- G40.C Lafora progressive myoclonus epilepsy Has subcodes
- G40.4 Other generalized epilepsy and epileptic syndromes Has subcodes
- G40.5 Epileptic seizures related to external causes Has subcodes
- G40.8 Other epilepsy and recurrent seizures Has subcodes
- G40.9 Epilepsy, unspecified Has subcodes
Version History
How G40 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentEpilepsy and recurrent seizures
-
FY 2026 Effective
UnchangedEpilepsy and recurrent seizures
Related Codes
Codes whose official notes reference G40
- E20.810 Autosomal dominant hypocalcemia Billable
- F02 Dementia in other diseases classified elsewhere
- F44.0 Dissociative amnesia Billable
- F44.1 Dissociative fugue Billable
- F78.A1 SYNGAP1-related intellectual disability Billable
- G04.8 Other encephalitis, myelitis and encephalomyelitis
- G25.3 Myoclonus Billable
- G40.5 Epileptic seizures related to external causes
- G43.1 Migraine with aura
- G93.45 Developmental and epileptic encephalopathy Billable
- I67.850 Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy Billable
- Q87.85 MED13L syndrome Billable
- Q87.87 Hao-Fountain Syndrome Billable
- Q93.52 Phelan-McDermid syndrome Billable
- QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants
- R56 Convulsions, not elsewhere classified
- R56.1 Post traumatic seizures Billable
- Z15.1 Genetic susceptibility to epilepsy and neurodevelopmental disorders Billable
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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