2018 ICD-10-CM Diagnosis Code G40

Epilepsy and recurrent seizures

Note
  • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G40. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • conversion disorder with seizures (
    ICD-10-CM Diagnosis Code F44.5

    Conversion disorder with seizures or convulsions

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Conversion disorder with attacks or seizures
    • Dissociative convulsions
    F44.5
    )
  • convulsions NOS (
    ICD-10-CM Diagnosis Code R56.9

    Unspecified convulsions

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Convulsion disorder
    • Fit NOS
    • Recurrent convulsions
    • Seizure(s) (convulsive) NOS
    R56.9
    )
  • post traumatic seizures (
    ICD-10-CM Diagnosis Code R56.1

    Post traumatic seizures

      2016 2017 2018 Billable/Specific Code
    Type 1 Excludes
    • post traumatic epilepsy (G40.-)
    R56.1
    )
  • seizure (convulsive) NOS (
    ICD-10-CM Diagnosis Code R56.9

    Unspecified convulsions

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Convulsion disorder
    • Fit NOS
    • Recurrent convulsions
    • Seizure(s) (convulsive) NOS
    R56.9
    )
  • seizure of newborn (
    ICD-10-CM Diagnosis Code P90

    Convulsions of newborn

      2016 2017 2018 Billable/Specific Code Code on Newborn Record
    Type 1 Excludes
    • benign myoclonic epilepsy in infancy (G40.3-)
    • benign neonatal convulsions (familial) (G40.3-)
    P90
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (G40) and the excluded code together.
  • hippocampal sclerosis (
    ICD-10-CM Diagnosis Code G93.81

    Temporal sclerosis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Hippocampal sclerosis
    • Mesial temporal sclerosis
    G93.81
    )
  • mesial temporal sclerosis (
    ICD-10-CM Diagnosis Code G93.81

    Temporal sclerosis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Hippocampal sclerosis
    • Mesial temporal sclerosis
    G93.81
    )
  • temporal sclerosis (
    ICD-10-CM Diagnosis Code G93.81

    Temporal sclerosis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Hippocampal sclerosis
    • Mesial temporal sclerosis
    G93.81
    )
  • Todd's paralysis (
    ICD-10-CM Diagnosis Code G83.84

    Todd's paralysis (postepileptic)

      2016 2017 2018 Billable/Specific Code
    G83.84
    )
The following code(s) above G40 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G40:
  • G00-G99
    2018 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • 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)
    Diseases of the nervous system
Clinical Information Code History
Code annotations containing back-references to G40:
ICD-10-CM Codes Adjacent To G40
G36.9 Acute disseminated demyelination, unspecified
G37 Other demyelinating diseases of central nervous system
G37.0 Diffuse sclerosis of central nervous system
G37.1 Central demyelination of corpus callosum
G37.2 Central pontine myelinolysis
G37.3 Acute transverse myelitis in demyelinating disease of central nervous system
G37.4 Subacute necrotizing myelitis of central nervous system
G37.5 Concentric sclerosis [Balo] of central nervous system
G37.8 Other specified demyelinating diseases of central nervous system
G37.9 Demyelinating disease of central nervous system, unspecified
G40 Epilepsy and recurrent seizures
G40.0 Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
G40.00 Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable
G40.001 …… with status epilepticus
G40.009 …… without status epilepticus
G40.01 Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable
G40.011 …… with status epilepticus
G40.019 …… without status epilepticus
G40.1 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
G40.10 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable
G40.101 …… with status epilepticus

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.