Toxic effect of mercury and its compounds

This code signifies adverse health effects resulting from exposure to mercury or its various chemical compounds. It encompasses a range of symptoms and organ system damage caused by the toxic properties of mercury, regardless of the route of exposure.

Assign this code when a patient presents with signs and symptoms directly attributable to mercury poisoning, such as neurological deficits, renal dysfunction, or gastrointestinal issues, and mercury exposure is confirmed or strongly suspected. Documentation should clearly link the patient's condition to mercury toxicity, often supported by laboratory findings (e.g., elevated blood or urine mercury levels).

• Differentiate from accidental poisoning (E860.0-E860.9) where the intent is not specified as toxic effect.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter.
• Look for specific documentation of the source or type of mercury exposure if available, as this may influence additional E-codes.