Poisoning by methylphenidate, intentional self-harm, init

This code signifies a patient presenting with adverse effects resulting from the deliberate self-administration of methylphenidate, a central nervous system stimulant. The intent behind the overdose is self-harm, and this encounter represents the initial presentation for treatment.

Apply this code when documenting a patient admitted to the emergency department or inpatient setting due to an intentional overdose of methylphenidate. This is appropriate for the first visit related to this specific poisoning event, such as initial assessment, stabilization, and acute management.

• Always sequence this code as the primary diagnosis when the poisoning is the reason for the encounter.
• Assign additional codes for any associated physical or psychological manifestations of the poisoning.
• Do not use this code for accidental poisonings or adverse effects from therapeutic use; different codes apply for those scenarios.