| T415X | Poisoning by, adverse effect of and underdosing of therapeutic gases |
| T415X1 | Poisoning by therapeutic gases, accidental (unintentional) |
| T415X1A | Poisoning by therapeutic gases, accidental (unintentional), initial encounter |
| T415X1D | Poisoning by therapeutic gases, accidental (unintentional), subsequent encounter |
| T415X1S | Poisoning by therapeutic gases, accidental (unintentional), sequela |
| T415X2 | Poisoning by therapeutic gases, intentional self-harm |
| T415X2A | Poisoning by therapeutic gases, intentional self-harm, initial encounter |
| T415X2D | Poisoning by therapeutic gases, intentional self-harm, subsequent encounter |
| T415X2S | Poisoning by therapeutic gases, intentional self-harm, sequela |
| T415X3 | Poisoning by therapeutic gases, assault |
| T415X3A | Poisoning by therapeutic gases, assault, initial encounter |
| T415X3D | Poisoning by therapeutic gases, assault, subsequent encounter |
| T415X3S | Poisoning by therapeutic gases, assault, sequela |
| T415X4 | Poisoning by therapeutic gases, undetermined |
| T415X4A | Poisoning by therapeutic gases, undetermined, initial encounter |
| T415X4D | Poisoning by therapeutic gases, undetermined, subsequent encounter |
| T415X4S | Poisoning by therapeutic gases, undetermined, sequela |
| T415X5 | Adverse effect of therapeutic gases |
| T415X5A | Adverse effect of therapeutic gases, initial encounter |
| T415X5D | Adverse effect of therapeutic gases, subsequent encounter |
| T415X5S | Adverse effect of therapeutic gases, sequela |
| T415X6 | Underdosing of therapeutic gases |
| T415X6A | Underdosing of therapeutic gases, initial encounter |
| T415X6D | Underdosing of therapeutic gases, subsequent encounter |
| T415X6S | Underdosing of therapeutic gases, sequela |
| T42 | Antiepileptic, sedative- hypnotic and antiparkinsonism drugs Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs |
| T420 | Poisoning by, adverse effect of and underdosing of hydantoin derivatives |
| T420X | Poisoning by, adverse effect of and underdosing of hydantoin derivatives |
| T420X1 | Poisoning by hydantoin derivatives, accidental (unintentional) |
| T420X1A | Poisoning by hydantoin derivatives, accidental (unintentional), initial encounter |
| T420X1D | Poisoning by hydantoin derivatives, accidental (unintentional), subsequent encounter |
| T420X1S | Poisoning by hydantoin derivatives, accidental (unintentional), sequela |
| T420X2 | Poisoning by hydantoin derivatives, intentional self-harm |
| T420X2A | Poisoning by hydantoin derivatives, intentional self-harm, initial encounter |
| T420X2D | Poisoning by hydantoin derivatives, intentional self-harm, subsequent encounter |
| T420X2S | Poisoning by hydantoin derivatives, intentional self-harm, sequela |
| T420X3 | Poisoning by hydantoin derivatives, assault |
| T420X3A | Poisoning by hydantoin derivatives, assault, initial encounter |
| T420X3D | Poisoning by hydantoin derivatives, assault, subsequent encounter |
| T420X3S | Poisoning by hydantoin derivatives, assault, sequela |
| T420X4 | Poisoning by hydantoin derivatives, undetermined |
| T420X4A | Poisoning by hydantoin derivatives, undetermined, initial encounter |
| T420X4D | Poisoning by hydantoin derivatives, undetermined, subsequent encounter |
| T420X4S | Poisoning by hydantoin derivatives, undetermined, sequela |
| T420X5 | Adverse effect of hydantoin derivatives |
| T420X5A | Adverse effect of hydantoin derivatives, initial encounter |
| T420X5D | Adverse effect of hydantoin derivatives, subsequent encounter |
| T420X5S | Adverse effect of hydantoin derivatives, sequela |
| T420X6 | Underdosing of hydantoin derivatives |
| T420X6A | Underdosing of hydantoin derivatives, initial encounter |