1. ICD-10-CM Codes
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2. G00-G99 Diseases of the nervous system
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3. G40-G47 Episodic and paroxysmal disorders
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4. G40- Epilepsy and recurrent seizures
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5. 2022 ICD-10-CM Diagnosis Code G40.109

2022 ICD-10-CM Diagnosis Code G40.109

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

2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code

• G40.109 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 simp prt seiz,not ntrct, w/o stat epi
• The 2022 edition of ICD-10-CM G40.109 became effective on October 1, 2021.
• This is the American ICD-10-CM version of G40.109 - other international versions of ICD-10 G40.109 may differ.

• Epilepsia partialis continua, intractable
• Epilepsy loss consciousness localization related
• Epilepsy, partial frontal lobe
• Epilepsy, partial occipital lobe
• Epilepsy, partial parietal lobe
• Localization-related epilepsy
• Partial frontal lobe epilepsy
• Partial occipital lobe epilepsy
• Partial parietal lobe epilepsy
• Refractory epilepsia partialis continua
• Simple partial epilepsy
• Simple partial frontal lobe epilepsy
• Simple partial occipital lobe epilepsy
• Simple partial parietal lobe epilepsy
• Simple partial temporal lobe epilepsy

• 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 G40.109 to ICD-9-CM

• 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

• 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 2021 2022 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)
    • symptomatic
      • with simple partial seizures G40.109
        • not intractable G40.109
          • without status epilepticus G40.109
  • syndromes
    • localization-related (focal) (partial)
      • symptomatic
        • with simple partial seizures G40.109
          • not intractable G40.109
            • without status epilepticus G40.109
• Kozhevnikof's epilepsy G40.109
  • not intractable G40.109
    • without status epilepticus G40.109

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