Toxic effect of mercury and its compnd, self-harm, sequela

This code signifies a long-term health problem or residual effect resulting from a past act of intentional self-poisoning with mercury or its compounds. It indicates that the patient is currently experiencing a permanent or chronic condition directly attributable to that prior toxic exposure.

Apply this code when documenting a patient presenting with chronic neurological deficits, kidney damage, or other persistent organ dysfunction that has been definitively linked to a previous self-inflicted mercury poisoning. This is appropriate for follow-up encounters addressing these lasting health consequences, not the initial acute event.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic kidney disease, peripheral neuropathy).
• Ensure documentation clearly establishes the link between the current condition and the past intentional mercury exposure.
• Do not use this code for acute mercury poisoning or for accidental/assault-related exposures.