| ICD-10 Code | Description |
| T40.601A | Poisoning by unspecified narcotics, accidental (unintentional), initial encounter |
| T40.601D | Poisoning by unspecified narcotics, accidental (unintentional), subsequent encounter |
| T40.601S | Poisoning by unspecified narcotics, accidental (unintentional), sequela |
| T40.602A | Poisoning by unspecified narcotics, intentional self-harm, initial encounter |
| T40.602D | Poisoning by unspecified narcotics, intentional self-harm, subsequent encounter |
| T40.602S | Poisoning by unspecified narcotics, intentional self-harm, sequela |
| T40.603A | Poisoning by unspecified narcotics, assault, initial encounter |
| T40.603D | Poisoning by unspecified narcotics, assault, subsequent encounter |
| T40.603S | Poisoning by unspecified narcotics, assault, sequela |
| T40.604A | Poisoning by unspecified narcotics, undetermined, initial encounter |
| T40.604D | Poisoning by unspecified narcotics, undetermined, subsequent encounter |
| T40.604S | Poisoning by unspecified narcotics, undetermined, sequela |
| T40.605A | Adverse effect of unspecified narcotics, initial encounter |
| T40.605D | Adverse effect of unspecified narcotics, subsequent encounter |
| T40.605S | Adverse effect of unspecified narcotics, sequela |
| T40.606A | Underdosing of unspecified narcotics, initial encounter |
| T40.606D | Underdosing of unspecified narcotics, subsequent encounter |
| T40.606S | Underdosing of unspecified narcotics, sequela |
| T40.691A | Poisoning by other narcotics, accidental (unintentional), initial encounter |
| T40.691D | Poisoning by other narcotics, accidental (unintentional), subsequent encounter |
| T40.691S | Poisoning by other narcotics, accidental (unintentional), sequela |
| T40.692A | Poisoning by other narcotics, intentional self-harm, initial encounter |
| T40.692D | Poisoning by other narcotics, intentional self-harm, subsequent encounter |
| T40.692S | Poisoning by other narcotics, intentional self-harm, sequela |
| T40.693A | Poisoning by other narcotics, assault, initial encounter |
| T40.693D | Poisoning by other narcotics, assault, subsequent encounter |
| T40.693S | Poisoning by other narcotics, assault, sequela |
| T40.694A | Poisoning by other narcotics, undetermined, initial encounter |
| T40.694D | Poisoning by other narcotics, undetermined, subsequent encounter |
| T40.694S | Poisoning by other narcotics, undetermined, sequela |
| T40.695A | Adverse effect of other narcotics, initial encounter |
| T40.695D | Adverse effect of other narcotics, subsequent encounter |
| T40.695S | Adverse effect of other narcotics, sequela |
| T40.696A | Underdosing of other narcotics, initial encounter |
| T40.696D | Underdosing of other narcotics, subsequent encounter |
| T40.696S | Underdosing of other narcotics, sequela |
