T42.5X6A Underdosing of mixed antiepileptics, initial encounter
Billable / valid for submission ICD10CM Release FY2026
Version history
| Release | Valid from | Valid to | Description | Billable |
|---|---|---|---|---|
| FY2026 | 2025-10-01 | current | Underdosing of mixed antiepileptics, initial encounter | yes |
Related codes in T42
- T42 Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
- T42.0 Poisoning by, adverse effect of and underdosing of hydantoin derivatives
- T42.0X Poisoning by, adverse effect of and underdosing of hydantoin derivatives
- T42.0X1 Poisoning by hydantoin derivatives, accidental (unintentional)
- T42.0X1A Poisoning by hydantoin derivatives, accidental (unintentional), initial encounter
- T42.0X1D Poisoning by hydantoin derivatives, accidental (unintentional), subsequent encounter
- T42.0X1S Poisoning by hydantoin derivatives, accidental (unintentional), sequela
- T42.0X2 Poisoning by hydantoin derivatives, intentional self-harm
- T42.0X2A Poisoning by hydantoin derivatives, intentional self-harm, initial encounter
- T42.0X2D Poisoning by hydantoin derivatives, intentional self-harm, subsequent encounter
- T42.0X2S Poisoning by hydantoin derivatives, intentional self-harm, sequela
- T42.0X3 Poisoning by hydantoin derivatives, assault
- T42.0X3A Poisoning by hydantoin derivatives, assault, initial encounter
- T42.0X3D Poisoning by hydantoin derivatives, assault, subsequent encounter
- T42.0X3S Poisoning by hydantoin derivatives, assault, sequela
- T42.0X4 Poisoning by hydantoin derivatives, undetermined
- T42.0X4A Poisoning by hydantoin derivatives, undetermined, initial encounter
- T42.0X4D Poisoning by hydantoin derivatives, undetermined, subsequent encounter
- T42.0X4S Poisoning by hydantoin derivatives, undetermined, sequela
- T42.0X5 Adverse effect of hydantoin derivatives