Poisoning by penicillins, undetermined, subsequent encounter

This code signifies a patient presenting for follow-up care or treatment of adverse effects resulting from penicillin poisoning, where the intent (e.g., accidental, intentional self-harm) of the poisoning could not be determined. The patient is no longer in the initial acute phase of treatment.

This code is appropriate for encounters where a patient is receiving ongoing management for complications or sequelae of penicillin poisoning after the initial treatment has concluded. Examples include follow-up appointments for organ damage, allergic reactions, or other persistent symptoms caused by the penicillin.

• Assign this code for subsequent encounters after the initial poisoning event has been addressed.
• Ensure documentation clearly indicates the poisoning was due to penicillin and the intent is undetermined.
• Always code any associated manifestations or complications of the poisoning in addition to this code.