Poisoning by antiviral drugs, accidental, init

This code signifies an accidental overdose or adverse reaction to an antiviral medication, resulting in a toxic effect on the patient. The poisoning is unintentional, meaning the drug was taken incorrectly, in the wrong dosage, or by mistake, rather than with suicidal intent or due to assault.

Apply this code when a patient presents with symptoms of poisoning after inadvertently taking an antiviral drug. This includes scenarios such as a patient accidentally taking a double dose, mistaking an antiviral for another medication, or a child ingesting an antiviral medication not intended for them. It is specifically for the initial presentation and treatment of the poisoning.

• Always assign an additional code for the specific antiviral drug involved (from T36-T50) to provide greater specificity.
• Ensure the "A" seventh character is used only for the initial encounter where the patient is receiving active treatment for the poisoning.
• Differentiate carefully between accidental poisoning (T37.5X1-) and adverse effects of properly administered drugs (T37.5X5-).