Screening for chemical poisoning and other contamination

This code identifies encounters focused on detecting exposure to harmful chemical substances or environmental contaminants in individuals who are not currently exhibiting symptoms of poisoning. It signifies a proactive search for potential toxicity rather than the treatment of an active illness.

Use this code when a patient undergoes screening tests for chemical exposure due to occupational hazards, environmental concerns, or potential accidental contact, without presenting with acute poisoning symptoms. This is appropriate for routine monitoring or follow-up after a suspected, but unconfirmed, exposure event.

• This code is for screening purposes only; do not use it if the patient has confirmed chemical poisoning symptoms.
• Always code the reason for the screening (e.g., occupational exposure, environmental risk) as an additional diagnosis.
• Do not use this code for drug screening related to substance abuse or compliance monitoring.