2020 ICD-10-CM Diagnosis Code G40.001

Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, with status epilepticus

    2016 2017 2018 2019 2020 Billable/Specific Code
  • G40.001 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Local-rel idio epi w seiz of loc onst, not ntrct, w stat epi
  • The 2020 edition of ICD-10-CM G40.001 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G40.001 - other international versions of ICD-10 G40.001 may differ.
The following code(s) above G40.001 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 G40.001:
  • G00-G99
    2020 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
  • G40
    ICD-10-CM Diagnosis Code G40

    Epilepsy and recurrent seizures

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Note
    • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
    Type 1 Excludes
    • conversion disorder with seizures (F44.5)
    • convulsions NOS (R56.9)
    • post traumatic seizures (R56.1)
    • seizure (convulsive) NOS (R56.9)
    • seizure of newborn (P90)
    Type 2 Excludes
    Epilepsy and recurrent seizures
  • G40.0
    ICD-10-CM Diagnosis Code G40.0

    Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Benign childhood epilepsy with centrotemporal EEG spikes
    • Childhood epilepsy with occipital EEG paroxysms
    Type 1 Excludes
    Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
  • G40.00
    ICD-10-CM Diagnosis Code G40.00

    Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset without intractability
    Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable
Approximate Synonyms
  • Epilepsy, partial idiopathic with status epilepticus
  • Idiopathic partial epilepsy with status epilepticus
ICD-10-CM G40.001 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 023 Craniotomy with major device implant or acute complex cns pdx with mcc or chemotherapy implant or epilepsy with neurostimulator
  • 100 Seizures with mcc
  • 101 Seizures without mcc

Convert G40.001 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to G40.001:
  • Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure) G40.909
    ICD-10-CM Diagnosis Code G40.909

    Epilepsy, unspecified, not intractable, without status epilepticus

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Epilepsy NOS
    • Epileptic convulsions NOS
    • Epileptic fits NOS
    • Epileptic seizures NOS
    • Recurrent seizures NOS
    • Seizure disorder NOS
    • localization-related (focal) (partial)
      • idiopathic G40.009
        ICD-10-CM Diagnosis Code G40.009

        Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus

          2016 2017 2018 2019 2020 Billable/Specific Code
        Applicable To
        • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS
        • with seizures of localized onset G40.009
          ICD-10-CM Diagnosis Code G40.009

          Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus

            2016 2017 2018 2019 2020 Billable/Specific Code
          Applicable To
          • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS
          • not intractable G40.009
            ICD-10-CM Diagnosis Code G40.009

            Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus

              2016 2017 2018 2019 2020 Billable/Specific Code
            Applicable To
            • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS
            • with status epilepticus G40.001
    • syndromes
      • localization-related (focal) (partial)
        • idiopathic G40.009
          ICD-10-CM Diagnosis Code G40.009

          Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus

            2016 2017 2018 2019 2020 Billable/Specific Code
          Applicable To
          • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS
          • with seizures of localized onset G40.009
            ICD-10-CM Diagnosis Code G40.009

            Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus

              2016 2017 2018 2019 2020 Billable/Specific Code
            Applicable To
            • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS
            • not intractable G40.009
              ICD-10-CM Diagnosis Code G40.009

              Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, not intractable, without status epilepticus

                2016 2017 2018 2019 2020 Billable/Specific Code
              Applicable To
              • Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset NOS
              • with status epilepticus G40.001

ICD-10-CM Codes Adjacent To G40.001
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
G40.109 …… without status epilepticus
G40.11 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable
G40.111 …… with status epilepticus

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