Poisoning by antiallerg/antiemetic, undetermined, init

This code signifies a poisoning event involving antiallergic or antiemetic medications where the intent (accidental, intentional self-harm, assault) cannot be determined. The patient is in the initial phase of treatment for the toxic effects of the drug.

Apply this code when a patient presents with adverse effects from antiallergic or antiemetic drug exposure, and the medical record does not clearly state whether the poisoning was accidental, intentional, or due to assault. This code is appropriate for the initial encounter for treatment of the poisoning.

• Always sequence this code first when it is the primary reason for the encounter.
• Requires an additional code for the specific antiallergic or antiemetic drug if known (e.g., from the T36-T50 range).
• Do not use if the intent of the poisoning is clearly documented as accidental (T45.0X1-), intentional self-harm (T45.0X2-), or assault (T45.0X3-).