T40.3X6A Underdosing of methadone, 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 methadone, initial encounter | yes |
Related codes in T40
- T40 Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]
- T40.0 Poisoning by, adverse effect of and underdosing of opium
- T40.0X Poisoning by, adverse effect of and underdosing of opium
- T40.0X1 Poisoning by opium, accidental (unintentional)
- T40.0X1A Poisoning by opium, accidental (unintentional), initial encounter
- T40.0X1D Poisoning by opium, accidental (unintentional), subsequent encounter
- T40.0X1S Poisoning by opium, accidental (unintentional), sequela
- T40.0X2 Poisoning by opium, intentional self-harm
- T40.0X2A Poisoning by opium, intentional self-harm, initial encounter
- T40.0X2D Poisoning by opium, intentional self-harm, subsequent encounter
- T40.0X2S Poisoning by opium, intentional self-harm, sequela
- T40.0X3 Poisoning by opium, assault
- T40.0X3A Poisoning by opium, assault, initial encounter
- T40.0X3D Poisoning by opium, assault, subsequent encounter
- T40.0X3S Poisoning by opium, assault, sequela
- T40.0X4 Poisoning by opium, undetermined
- T40.0X4A Poisoning by opium, undetermined, initial encounter
- T40.0X4D Poisoning by opium, undetermined, subsequent encounter
- T40.0X4S Poisoning by opium, undetermined, sequela
- T40.0X5 Adverse effect of opium