Poisoning by antineopl and immunosup drugs, assault, subs

This code signifies a patient presenting for follow-up care or treatment of adverse effects resulting from an intentional overdose or malicious administration of antineoplastic or immunosuppressive medications. The poisoning was inflicted by another party with intent to harm.

Apply this code when documenting a patient's subsequent visit for complications, ongoing treatment, or monitoring related to an assault involving chemotherapy drugs or medications that suppress the immune system. This includes scenarios such as follow-up appointments for organ damage, infection, or other sequelae directly attributable to the poisoning.

• Ensure documentation clearly states the poisoning was an assault and that this is not the initial encounter for the event.
• Always sequence this code after the primary diagnosis indicating the specific manifestation of the poisoning (e.g., acute kidney failure, bone marrow suppression).
• Consider additional external cause codes (e.g., Y09.-) to further specify the circumstances of the assault, if documented.