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ICD-10-CM Codes
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G00-G99
Diseases of the nervous system
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G40-G47
Episodic and paroxysmal disorders
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G40-
Epilepsy and recurrent seizures
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2021 ICD-10-CM Diagnosis Code G40.01
2021 ICD-10-CM Diagnosis Code G40.01
Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
- G40.01 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- Short description: Local-rel (focal) idio epi w seizures of loc onset, ntrct
- The 2021 edition of ICD-10-CM G40.01 became effective on October 1, 2020.
- This is the American ICD-10-CM version of G40.01 - other international versions of ICD-10 G40.01 may differ.
The following code(s) above
G40.01 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
G40.01:
- G00-G99
2021 ICD-10-CM Range G00-G99
Diseases of the nervous systemType 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)
- G40
ICD-10-CM Diagnosis Code G40
Epilepsy and recurrent seizures
2016 2017 2018 2019 2020 2021 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)
- 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 2021 Non-Billable/Non-Specific Code
Applicable To- Benign childhood epilepsy with centrotemporal EEG spikes
- Childhood epilepsy with occipital EEG paroxysms
- 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
ICD-10-CM Codes Adjacent To G40.01
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
G40.009 …… without status epilepticus
G40.01
Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset, intractable
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
G40.109 …… without status epilepticus
G40.11 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, intractable
G40.119 …… without status epilepticus
G40.2 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
