Toxic effect of lead and its compounds, undet, sequela

This code signifies the long-term or residual effects resulting from a past exposure to lead or its compounds, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. These sequelae can manifest in various organ systems, including neurological, renal, and hematological impairments, long after the acute toxic event has resolved.

Apply this code when documenting chronic health problems directly attributable to a previous lead poisoning, and the medical record does not specify whether the original exposure was accidental, intentional, or due to assault. Examples include a patient presenting with cognitive deficits or chronic kidney disease years after a documented history of lead exposure, with no clear documentation of the exposure's intent.

• Always sequence this sequela code after the code(s) for the specific manifestation(s) of the lead poisoning.
• Ensure documentation clearly links the current condition to a past lead exposure.
• Only use the "undetermined" character when the intent of the original exposure cannot be ascertained from the medical record.