Toxic effect of methanol, undetermined, sequela

This code signifies the long-term or residual health problems resulting from a methanol poisoning where the intent (accidental, intentional self-harm, assault) cannot be determined. These sequelae can include chronic neurological deficits, visual impairment, metabolic disturbances, or organ damage that persist after the acute phase of the intoxication has resolved.

Apply this code when documenting conditions directly attributable to a past methanol exposure of unknown intent, and the patient is presenting for treatment of these lasting effects. This is appropriate for follow-up visits addressing chronic complications rather than the initial acute poisoning event.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., blindness, chronic kidney disease).
• Ensure documentation clearly links the current condition to a past methanol exposure and specifies the undetermined intent.
• Do not use for acute methanol poisoning or when the intent of the poisoning is known (e.g., accidental, intentional self-harm).