Poisn by pertuss vaccn, inc combin w pertuss, slf-hrm, subs

This code signifies a poisoning event resulting from the intentional self-administration of a pertussis-containing vaccine. This includes single-component pertussis vaccines or combination vaccines where pertussis is one of the active ingredients. The patient has already received initial treatment for this poisoning and is now presenting for follow-up care.

Use this code when documenting subsequent encounters for a patient who intentionally self-poisoned with a pertussis vaccine. This applies to visits for monitoring, managing ongoing symptoms, or addressing complications arising from the initial poisoning. It is crucial that the intent was self-harm, not accidental exposure or adverse effect from therapeutic use.

• Ensure documentation clearly states "intentional self-harm" as the intent of the poisoning.
• This "D" seventh character indicates a subsequent encounter; use "A" for initial encounters and "S" for sequela.
• Always code the specific type of poisoning (e.g., vaccine) and the intent (self-harm) as documented.