Poisn by unsp sys anti-infect and antiparastc, undet, init

This code indicates a poisoning event involving an anti-infective or antiparasitic medication where the specific substance is unknown. The intent of the poisoning (e.g., accidental, intentional self-harm) cannot be determined, and this is the first time the patient is being treated for this particular poisoning.

Use this code when a patient presents with symptoms of poisoning from an anti-infective or antiparasitic agent, but the exact drug involved cannot be identified through patient history, toxicology screens, or other diagnostic means. It is appropriate when the circumstances surrounding the poisoning are unclear or cannot be definitively established as accidental, intentional, or assault. This code is specifically for the initial encounter for treatment of the poisoning.

• Always attempt to identify the specific anti-infective or antiparasitic agent and the intent of the poisoning before resorting to this unspecified code.
• Ensure documentation clearly states that the substance is unknown and the intent is undetermined.
• Append a subsequent encounter (D) or sequela (S) seventh character for follow-up care related to this poisoning.