2024 ICD-10-CM Diagnosis Code G40.209: Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus

2024 ICD-10-CM Diagnosis Code G40.209

Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus

    2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code
  • G40.209 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Local-rel symptc epi w cmplx prt seiz,not ntrct,w/o stat epi
  • The 2024 edition of ICD-10-CM G40.209 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of G40.209 - other international versions of ICD-10 G40.209 may differ.
Applicable To
  • Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures NOS
The following code(s) above G40.209 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 G40.209:
  • G00-G99
    2024 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 2021 2022 2023 2024 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
  • G40.2
    ICD-10-CM Diagnosis Code G40.2

    Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures

      2016 2017 2018 2019 2020 2021 2022 2023 2024 Non-Billable/Non-Specific Code
    Applicable To
    • Attacks with alteration of consciousness, often with automatisms
    • Complex partial seizures developing into secondarily generalized seizures
    Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
  • G40.20
    ICD-10-CM Diagnosis Code G40.20

    Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable

      2016 2017 2018 2019 2020 2021 2022 2023 2024 Non-Billable/Non-Specific Code
    Applicable To
    • Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures without intractability
    Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable
Approximate Synonyms
  • Complex partial seizure with impairment of consciousness
  • Epilepsy, partial complex
  • Epilepsy, partial frontal lobe
  • Epilepsy, partial occipital lobe
  • Epilepsy, partial parietal lobe
  • Epilepsy, partial temporal lobe
  • Epilepsy, partial with secondary generalization
  • Epilepsy, psychomotor
  • Epilepsy, temporal lobe
  • Epileptic automatism
  • Epileptic complex partial seizures with automatisms
  • Epileptic seizures, generalized
  • Partial seizure evolving to secondary generalized seizure
  • Partial seizures of frontal lobe with impairment of conciousness
  • Partial seizures of parietal lobe with impairment of consciousness
  • Partial seizures of the occipital lobe with impairment of conciousness
  • Recurrent partial complex seizures
  • Secondarily generalized seizures
  • Seizure disorder recurrent, complex partial
  • Temporal lobe epilepsy
ICD-10-CM G40.209 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):
  • 023 Craniotomy with major device implant or acute complex cns principal diagnosis with mcc or chemotherapy implant or epilepsy with neurostimulator
  • 100 Seizures with mcc
  • 101 Seizures without mcc

Convert G40.209 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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to G40.209:

ICD-10-CM Codes Adjacent To G40.209
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
G40.119 …… without status epilepticus
G40.2 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
G40.20 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable
G40.201 …… with status epilepticus
G40.209 …… without status epilepticus
G40.21 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, intractable
G40.211 …… with status epilepticus
G40.219 …… without status epilepticus
G40.3 Generalized idiopathic epilepsy and epileptic syndromes
G40.30 Generalized idiopathic epilepsy and epileptic syndromes, not intractable
G40.301 …… with status epilepticus
G40.309 …… without status epilepticus
G40.31 Generalized idiopathic epilepsy and epileptic syndromes, intractable
G40.311 …… with status epilepticus
G40.319 …… without status epilepticus

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