2017/18 ICD-10-CM Diagnosis Code G40.3

Generalized idiopathic epilepsy and epileptic syndromes

Code Also
Code Also Help
A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.
  • MERRF syndrome, if applicable (
    ICD-10-CM Diagnosis Code E88.42

    MERRF syndrome

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Myoclonic epilepsy associated with ragged-red fibers
    Code Also
    • progressive myoclonic epilepsy (G40.3-)
    E88.42
    )
The following code(s) above G40.3 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 G40.3:
  • 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
  • G40
    ICD-10-CM Diagnosis Code G40

    Epilepsy and recurrent seizures

      2016 2017 2018 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
Code History
Code annotations containing back-references to G40.3:
ICD-10-CM Codes Adjacent To G40.3
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
G40.A Absence epileptic syndrome
G40.A0 Absence epileptic syndrome, not intractable
G40.A01 …… with status epilepticus
G40.A09 …… without status epilepticus

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