| ICD-10 Code | Description |
| T43.631A | Poisoning by methylphenidate, accidental (unintentional), initial encounter |
| T43.631D | Poisoning by methylphenidate, accidental (unintentional), subsequent encounter |
| T43.631S | Poisoning by methylphenidate, accidental (unintentional), sequela |
| T43.632A | Poisoning by methylphenidate, intentional self-harm, initial encounter |
| T43.632D | Poisoning by methylphenidate, intentional self-harm, subsequent encounter |
| T43.632S | Poisoning by methylphenidate, intentional self-harm, sequela |
| T43.633A | Poisoning by methylphenidate, assault, initial encounter |
| T43.633D | Poisoning by methylphenidate, assault, subsequent encounter |
| T43.633S | Poisoning by methylphenidate, assault, sequela |
| T43.634A | Poisoning by methylphenidate, undetermined, initial encounter |
| T43.634D | Poisoning by methylphenidate, undetermined, subsequent encounter |
| T43.634S | Poisoning by methylphenidate, undetermined, sequela |
| T43.635A | Adverse effect of methylphenidate, initial encounter |
| T43.635D | Adverse effect of methylphenidate, subsequent encounter |
| T43.635S | Adverse effect of methylphenidate, sequela |
| T43.636A | Underdosing of methylphenidate, initial encounter |
| T43.636D | Underdosing of methylphenidate, subsequent encounter |
| T43.636S | Underdosing of methylphenidate, sequela |
