ICD-10-CM Alphabetic Index · FY 2027 210 Entries

Epilepsy in the ICD-10-CM Index ICD-10-CM

The main term Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure) carries 210 index entries pointing to 58 ICD-10-CM codes. The default entry is G40.909, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.

✓ Built from the official CMS FY 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027
210
Index Entries
58
Codes Referenced
G40.909
Default Code
E
Letter
210 of 210 shown
ICD-10-CM

Index Entries Under Epilepsy 210 entries · 58 codes

Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure) G40.909
Note: the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
with
complex partial seizures see Epilepsy, localization-related, symptomatic, with complex partial seizures
grand mal seizures on awakening see Epilepsy, generalized, specified NEC
myoclonic absences see Epilepsy, generalized, specified NEC
myoclonic-astatic seizures see Epilepsy, generalized, specified NEC
simple partial seizures see Epilepsy, localization-related, symptomatic, with simple partial seizures
akinetic see Epilepsy, generalized, specified NEC
benign childhood with centrotemporal EEG spikes see Epilepsy, localization-related, idiopathic
benign myoclonic in infancy G40.80 Non-billable
Bravais-jacksonian see Epilepsy, localization-related, symptomatic, with simple partial seizures
childhood
with occipital EEG paroxysms see Epilepsy, localization-related, idiopathic
absence G40.A09
intractable G40.A19
with status epilepticus G40.A11
without status epilepticus G40.A19
not intractable G40.A09
with status epilepticus G40.A01
without status epilepticus G40.A09
climacteric see Epilepsy, specified NEC
cysticercosis B69.0
deterioration (mental) F06.8
due to syphilis A52.19
focal see Epilepsy, localization-related, symptomatic, with simple partial seizures
generalized
idiopathic G40.309
intractable G40.319
with status epilepticus G40.311
without status epilepticus G40.319
not intractable G40.309
with status epilepticus G40.301
without status epilepticus G40.309
specified NEC G40.409
intractable G40.419
with status epilepticus G40.411
without status epilepticus G40.419
not intractable G40.409
with status epilepticus G40.401
without status epilepticus G40.409
impulsive petit mal see Epilepsy, juvenile myoclonic
intractable G40.919
with status epilepticus G40.911
without status epilepticus G40.919
juvenile absence G40.A09
intractable G40.A19
with status epilepticus G40.A11
without status epilepticus G40.A19
not intractable G40.A09
with status epilepticus G40.A01
without status epilepticus G40.A09
juvenile myoclonic G40.B09
intractable G40.B19
with status epilepticus G40.B11
without status epilepticus G40.B19
not intractable G40.B09
with status epilepticus G40.B01
without status epilepticus G40.B09
intractable G40.844
with status epilepticus G40.843
without status epilepticus G40.844
not intractable G40.842
with status epilepticus G40.841
without status epilepticus G40.842
Lafora progressive myoclonus G40.C09 see also Epilepsy, myoclonus, progressive, Lafora
idiopathic G40.009
with seizures of localized onset G40.009
intractable G40.019
with status epilepticus G40.011
without status epilepticus G40.019
not intractable G40.009
with status epilepticus G40.001
without status epilepticus G40.009
symptomatic
with complex partial seizures G40.209
intractable G40.219
with status epilepticus G40.211
without status epilepticus G40.219
not intractable G40.209
with status epilepticus G40.201
without status epilepticus G40.209
with simple partial seizures G40.109
intractable G40.119
with status epilepticus G40.111
without status epilepticus G40.119
not intractable G40.109
with status epilepticus G40.101
without status epilepticus G40.109
myoclonus, myoclonic see also Epilepsy, generalized, specified NEC
progressive see also Epilepsy, generalized, idiopathic
Lafora G40.C09
intractable G40.C19
with status epilepticus G40.C11
without status epilepticus G40.C19
not intractable G40.C09
with status epilepticus G40.C01
without status epilepticus G40.C09
type 1 see Epilepsy, generalized, idiopathic
type 2 see Epilepsy, myoclonus, progressive, Lafora
severe, in infancy (SMEI) G40.83 Non-billable
not intractable G40.909
with status epilepticus G40.901
without status epilepticus G40.909
on awakening see Epilepsy, generalized, specified NEC
parasitic NOS B71.9 [G94]
partial see Epilepsy, localization-related, symptomatic, with simple partial seizures
partialis continua G40.1 Non-billable see also Kozhevnikof's epilepsy
peripheral see Epilepsy, specified NEC
polymorphic, in infancy (PMEI) G40.83 Non-billable
procursiva see Epilepsy, localization-related, symptomatic, with simple partial seizures
progressive (familial) myoclonic see Epilepsy, myoclonus, progressive
Lafora G40.C09 see also Epilepsy, myoclonus, progressive, Lafora
reflex see Epilepsy, specified NEC
alcohol G40.509
not intractable G40.509
with status epilepticus G40.501
without status epilepticus G40.509
drugs G40.509
not intractable G40.509
with status epilepticus G40.501
without status epilepticus G40.509
external causes G40.509
not intractable G40.509
with status epilepticus G40.501
without status epilepticus G40.509
hormonal changes G40.509
not intractable G40.509
with status epilepticus G40.501
without status epilepticus G40.509
sleep deprivation G40.509
not intractable G40.509
with status epilepticus G40.501
without status epilepticus G40.509
stress G40.509
not intractable G40.509
with status epilepticus G40.501
without status epilepticus G40.509
somatomotor see Epilepsy, localization-related, symptomatic, with simple partial seizures
somatosensory see Epilepsy, localization-related, symptomatic, with simple partial seizures
spasms G40.822
intractable G40.824
with status epilepticus G40.823
without status epilepticus G40.824
not intractable G40.822
with status epilepticus G40.821
without status epilepticus G40.822
specified NEC G40.802
intractable G40.804
with status epilepticus G40.803
without status epilepticus G40.804
not intractable G40.802
with status epilepticus G40.801
without status epilepticus G40.802
syndromes
generalized
idiopathic G40.309
intractable G40.319
with status epilepticus G40.311
without status epilepticus G40.319
not intractable G40.309
with status epilepticus G40.301
without status epilepticus G40.309
specified NEC G40.409
intractable G40.419
with status epilepticus G40.411
without status epilepticus G40.419
not intractable G40.409
with status epilepticus G40.401
without status epilepticus G40.409
idiopathic G40.009
with seizures of localized onset G40.009
intractable G40.019
with status epilepticus G40.011
without status epilepticus G40.019
not intractable G40.009
with status epilepticus G40.001
without status epilepticus G40.009
symptomatic
with complex partial seizures G40.209
intractable G40.219
with status epilepticus G40.211
without status epilepticus G40.219
not intractable G40.209
with status epilepticus G40.201
without status epilepticus G40.209
with simple partial seizures G40.109
intractable G40.119
with status epilepticus G40.111
without status epilepticus G40.119
not intractable G40.109
with status epilepticus G40.101
without status epilepticus G40.109
specified NEC G40.802
intractable G40.804
with status epilepticus G40.803
without status epilepticus G40.804
not intractable G40.802
with status epilepticus G40.801
without status epilepticus G40.802
tonic (-clonic) see Epilepsy, generalized, specified NEC
twilight F05
uncinate (gyrus) see Epilepsy, localization-related, symptomatic, with complex partial seizures
Unverricht (-Lundborg) (familial myoclonic) see Epilepsy, generalized, idiopathic
visceral see Epilepsy, specified NEC
visual see Epilepsy, specified NEC

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Related Index Terms

Kozhevnikof's epilepsyAll index terms starting with EIndex to Diseases and InjuriesICD-10-CM Code Lookup

Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.