Toxic effect of unspecified metal, undetermined, sequela

This code signifies a long-term health problem resulting from exposure to an unknown metal, where the intent of the exposure (e.g., accidental, intentional self-harm) cannot be determined. It indicates that the acute phase of the poisoning has passed, but residual effects or chronic conditions persist due to the metal's toxic impact.

Apply this code when documentation clearly indicates a sequela (late effect) of metal toxicity, but the specific metal involved is not identified, and the circumstances surrounding the exposure are unclear or unstated. This is appropriate for chronic conditions or persistent symptoms directly attributed to a past, unspecified metal exposure.

• Ensure the documentation explicitly states a "sequela" or "late effect" of the metal toxicity.
• Verify that no specific metal (e.g., lead, mercury) is identified in the medical record.
• Confirm that the intent of the exposure is not documented as accidental, intentional self-harm, assault, or therapeutic use.