| T40421D | Poisoning by tramadol, accidental (unintentional), subsequent encounter |
| T40421S | Poisoning by tramadol, accidental (unintentional), sequela |
| T40422 | Poisoning by tramadol, intentional self-harm |
| T40422A | Poisoning by tramadol, intentional self-harm, initial encounter |
| T40422D | Poisoning by tramadol, intentional self-harm, subsequent encounter |
| T40422S | Poisoning by tramadol, intentional self-harm, sequela |
| T40423 | Poisoning by tramadol, assault |
| T40423A | Poisoning by tramadol, assault, initial encounter |
| T40423D | Poisoning by tramadol, assault, subsequent encounter |
| T40423S | Poisoning by tramadol, assault, sequela |
| T40424 | Poisoning by tramadol, undetermined |
| T40424A | Poisoning by tramadol, undetermined, initial encounter |
| T40424D | Poisoning by tramadol, undetermined, subsequent encounter |
| T40424S | Poisoning by tramadol, undetermined, sequela |
| T40425 | Adverse effect of tramadol |
| T40425A | Adverse effect of tramadol, initial encounter |
| T40425D | Adverse effect of tramadol, subsequent encounter |
| T40425S | Adverse effect of tramadol, sequela |
| T40426 | Underdosing of tramadol |
| T40426A | Underdosing of tramadol, initial encounter |
| T40426D | Underdosing of tramadol, subsequent encounter |
| T40426S | Underdosing of tramadol, sequela |
| T4049 | Poisoning by, adverse effect of and underdosing of other synthetic narcotics |
| T40491 | Poisoning by other synthetic narcotics, accidental (unintentional) |
| T40491A | Poisoning by other synthetic narcotics, accidental (unintentional), initial encounter |
| T40491D | Poisoning by other synthetic narcotics, accidental (unintentional), subsequent encounter |
| T40491S | Poisoning by other synthetic narcotics, accidental (unintentional), sequela |
| T40492 | Poisoning by other synthetic narcotics, intentional self-harm |
| T40492A | Poisoning by other synthetic narcotics, intentional self-harm, initial encounter |
| T40492D | Poisoning by other synthetic narcotics, intentional self-harm, subsequent encounter |
| T40492S | Poisoning by other synthetic narcotics, intentional self-harm, sequela |
| T40493 | Poisoning by other synthetic narcotics, assault |
| T40493A | Poisoning by other synthetic narcotics, assault, initial encounter |
| T40493D | Poisoning by other synthetic narcotics, assault, subsequent encounter |
| T40493S | Poisoning by other synthetic narcotics, assault, sequela |
| T40494 | Poisoning by other synthetic narcotics, undetermined |
| T40494A | Poisoning by other synthetic narcotics, undetermined, initial encounter |
| T40494D | Poisoning by other synthetic narcotics, undetermined, subsequent encounter |
| T40494S | Poisoning by other synthetic narcotics, undetermined, sequela |
| T40495 | Adverse effect of other synthetic narcotics |
| T40495A | Adverse effect of other synthetic narcotics, initial encounter |
| T40495D | Adverse effect of other synthetic narcotics, subsequent encounter |
| T40495S | Adverse effect of other synthetic narcotics, sequela |
| T40496 | Underdosing of other synthetic narcotics |
| T40496A | Underdosing of other synthetic narcotics, initial encounter |
| T40496D | Underdosing of other synthetic narcotics, subsequent encounter |
| T40496S | Underdosing of other synthetic narcotics, sequela |
| T405 | Poisoning by, adverse effect of and underdosing of cocaine |
| T405X | Poisoning by, adverse effect of and underdosing of cocaine |
| T405X1 | Poisoning by cocaine, accidental (unintentional) |