Toxic effect of lead and its compounds, undetermined, subs

This code signifies a toxic reaction to lead or its compounds where the intent (e.g., accidental, intentional self-harm, assault) is not documented or cannot be determined. It is used for encounters following the initial treatment of the lead poisoning.

This code is appropriate for follow-up visits, such as monitoring lead levels, managing ongoing symptoms, or assessing the effectiveness of chelation therapy, when the original exposure's intent remains unknown. It applies when the patient is still experiencing effects from the lead toxicity during a subsequent encounter.

• Always assign an additional code for the specific manifestations of lead poisoning.
• Ensure documentation clearly indicates that the intent of the lead exposure is undetermined.
• Distinguish from initial encounters (A) and sequela encounters (S) based on the patient's stage of care.