Poisoning by oth systemic anti-infect/parasit, acc, subs

This code signifies a patient presenting for follow-up care or treatment of adverse effects resulting from an accidental overdose or unintended exposure to a systemic anti-infective or antiparasitic medication not otherwise specified. The poisoning was unintentional, and the patient is no longer in the acute phase of treatment.

Use this code for patients returning for ongoing management of organ damage, persistent symptoms, or complications directly attributable to a prior accidental poisoning by a systemic anti-infective or antiparasitic. This includes scenarios like monitoring liver function after an antibiotic overdose or managing neurological sequelae from an antimalarial.

• Requires an external cause code (e.g., X44.-) to fully describe the circumstances of the poisoning.
• Do not use for initial encounters or active treatment of the acute poisoning; refer to codes with an "A" seventh character.
• Ensure the specific anti-infective or antiparasitic agent is documented to support the "other specified" category.