Poisoning by oth vaccines and biolg substnc, self-harm, subs

This code signifies a patient presenting for follow-up care related to a self-inflicted poisoning event involving a vaccine or other biological substance. The initial act of intentional self-harm has already occurred, and the patient is now receiving ongoing management for its effects.

Use this code for subsequent encounters when a patient is being treated for complications, side effects, or ongoing medical issues resulting from a deliberate overdose or misuse of a vaccine or biological substance. This includes follow-up appointments for psychiatric evaluation, organ damage, or other physical sequelae after the acute phase of the poisoning.

• Ensure the documentation clearly indicates "intentional self-harm" and that the encounter is for follow-up care, not the initial acute presentation.
• Always code the specific vaccine or biological substance if known, using a more precise code from the T50 category if available.
• Remember to also code any associated physical or mental health conditions resulting from the poisoning, as well as an external cause code (X64.-) for the initial event.