Poisn by slctv seroton/norepineph reup inhibtr, undet, init

This diagnosis code signifies an adverse event resulting from exposure to selective serotonin and norepinephrine reuptake inhibitors (SNRIs) where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. It indicates that the patient is presenting for the initial treatment of the poisoning.

This code is appropriate when a patient presents with symptoms of SNRI toxicity, and the medical record does not clearly document whether the exposure was accidental, intentional, or due to assault. It should be used for the first encounter related to this specific poisoning event. Subsequent encounters for the same poisoning would require a different seventh character.

• Always assign an additional code for the specific SNRI drug involved, if known (from categories T43.20-T43.29).
• Do not use this code if the intent of the poisoning is clearly documented as accidental, intentional self-harm, or assault; instead, select the appropriate intent code.
• Remember to append the correct seventh character for subsequent encounters (D for subsequent, S for sequela).