- G40.509 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM G40.509 became effective on October 1, 2022.
- This is the American ICD-10-CM version of G40.509 – other international versions of ICD-10 G40.509 may differ.
ICD-10-CM G40.509 is grouped within Diagnostic Related Group(s):
- 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
Applicable To
- Epileptic seizures related to external causes, NOS
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 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
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to G40.509:
- related to > Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure) G40.909
- alcohol > related to G40.509
- not intractable > alcohol G40.509
- without status epliepticus > not intractable G40.509
- drugs > related to G40.509
- not intractable > drugs G40.509
- without status epliepticus > not intractable G40.509
- external causes > related to G40.509
- not intractable > external causes G40.509
- without status epliepticus > not intractable G40.509
- hormonal changes > related to G40.509
- not intractable > hormonal changes G40.509
- without status epliepticus > not intractable G40.509
- sleep deprivation > related to G40.509
- not intractable > sleep deprivation G40.509
- without status epliepticus > not intractable G40.509
- stress > related to G40.509
- not intractable > stress G40.509
- without status epliepticus > not intractable G40.509