G40.501 — Epileptic seizures related to external causes, not intractable, with status epilepticus
Is G40.501 billable?
Yes — G40.501 is billable for FY2027. G40.501 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. G40.501 may be submitted for encounters from October 1, 2026 through September 30, 2027.
G40.501 at a glance
| Code | G40.501 |
|---|---|
| Description | Epileptic seizures related to external causes, not intractable, with status epilepticus |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G40.501 group to?
G40.501 sits in MDC 01 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 023Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulatorsurgical
As a secondary diagnosis, G40.501 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is G40.501 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G40.501. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Epilepsy, epileptic, epilepsia › related to › alcohol › not intractable › with status epilepticus (attack) (cerebral) (convulsion) (fit) (seizure)
- Epilepsy, epileptic, epilepsia › related to › drugs › not intractable › with status epilepticus (attack) (cerebral) (convulsion) (fit) (seizure)
- Epilepsy, epileptic, epilepsia › related to › external causes › not intractable › with status epilepticus (attack) (cerebral) (convulsion) (fit) (seizure)
- Epilepsy, epileptic, epilepsia › related to › hormonal changes › not intractable › with status epilepticus (attack) (cerebral) (convulsion) (fit) (seizure)
- Epilepsy, epileptic, epilepsia › related to › sleep deprivation › not intractable › with status epilepticus (attack) (cerebral) (convulsion) (fit) (seizure)
- Epilepsy, epileptic, epilepsia › related to › stress › not intractable › with status epilepticus (attack) (cerebral) (convulsion) (fit) (seizure)
Excludes1 — never code together — inherited from G40
The conditions below can never be reported together with G40.501 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from G40.5
Report an additional code alongside G40.501 to fully describe the condition. G40.501 is sequenced first.
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G40.501, but a patient may have both at the same time. When documentation supports it, G40.501 and the excluded code may both be reported.
- 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)
Excludes2 — not included here — inherited from G40
The conditions below are not part of G40.501, but a patient may have both at the same time. When documentation supports it, G40.501 and the excluded code may both be reported.
Code also — inherited from G40.5
Two codes may be needed to describe the condition fully. Whether G40.501 is sequenced first depends on the reason for the encounter.
- , if applicable, associated epilepsy and recurrent seizures (G40.-)
How long has G40.501 existed?
G40.501 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.