Poisoning by methadone, assault, sequela

This code signifies a long-term effect or complication resulting from a methadone poisoning that occurred due to an assault. It indicates that the patient is experiencing residual issues directly attributable to the initial intentional poisoning by another party.

Apply this code when documenting a patient presenting with ongoing health problems, such as organ damage, neurological deficits, or chronic pain, that are a direct consequence of a past methadone poisoning where the intent was assault. This code is appropriate for follow-up encounters after the acute phase of the poisoning has resolved, but sequelae persist.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic kidney disease, neuropathy).
• Ensure the medical record clearly documents the assaultive nature of the poisoning and the direct link between the poisoning and the current sequela.
• Do not use this code for acute poisoning; it is exclusively for the long-term effects.