Poisoning by anthelminthics, undetermined, initial encounter

This code signifies a case of poisoning due to an anthelminthic medication where the intent (accidental, intentional self-harm, assault) cannot be determined. The patient is in the acute phase of treatment for the adverse effects of the anthelminthic agent.

This code is appropriate when a patient presents with symptoms of anthelminthic toxicity, and the medical record does not clearly specify whether the poisoning was accidental, intentional, or due to an assault. It should be used for the initial encounter where the patient is actively receiving diagnostic workup and/or treatment for the poisoning.

• Always sequence this code first if it is the primary reason for the encounter.
• Do not use this code if the intent of the poisoning is known; instead, select a more specific T37.4X1, T37.4X2, or T37.4X3 code.
• Assign additional codes for all manifestations of the poisoning and any other relevant conditions.